User Guide CONTINUOUS GLUCOSE MONITORING SYSTEM

User Guide CONTINUOUS GLUCOSE MONITORING SYSTEM
CONTINUOUS GLUCOSE
MONITORING SYSTEM
User Guide
IMPORTANT CONTACTS AND NUMBERS
Emergency Phone Number:_______________________________________________
Your Healthcare Professional:______________________________________________
Your Receiver Serial Number:______________________________________________
Your Transmitter Serial Number:____________________________________________
___________________________________________________________________
1.877.339.2664
Dexcom® Technical Support/Patient Care Team:________________________________
dexcom.com
Dexcom Website:_______________________________________________________
Nearest Hospital:_______________________________________________________ ___________________________________________________________________
Table of Contents
Part 1: Getting Started
Glossary5
Chapter 1 - Beginning Your Dexcom G5®
Mobile Continuous Glucose Monitoring
(CGM) System Journey
9
1.1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.2 Self-Paced Resources. . . .. . . . . . . . . . . . . . . . 10
1.3 Your Dexcom Account.. . . .. . . . . . . . . . . . . . . . 12
Chapter 2 - Indications for Use and Safety
Statement15
2.1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2 Important User Information. . . . . . . . . . . . . . . 15
2.3 Safety Statements. . . . . . . .. . . . . . . . . . . . . . . . 16
2.4 Overview of Safety Statements.. . . . . . . . . . 17
2.5 General CGM System Warnings. . . . . . . . . . 20
2.6 Calibration Warning and Precautions.. . . . 20
2.7 System/Hardware/Software Warnings and
Precautions.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Chapter 3 - Risks and Benefits
29
3.1Risks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.2Benefits.. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . 30
Part 2: Let’s G5®! The Basics
Chapter 4 - What Is the Dexcom G5 Mobile
CGM System?
35
4.1 System Description. . . . . . . . . . . . . . . . . . . . . . . 35
4.2 Safety Statement.. . . . . . . . . . . . . . . . . . . . . . . . . 35
4.3 The Dexcom G5 Mobile CGM System. . . . 36
4.4 What’s New to the Dexcom G5 Mobile
CGM System?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.5 System Information.. . . . . . . . . . . . . . . . . . . . . . 39
4.6 System Components. . . . . .. . . . . . . . . . . . . . . . 39
4.7 Smart Device Overview. . . . . . . . . . . . . . . . . . .48
Chapter 5 - Set up Your Display Devices.... 49
5.1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.2 Safety Statement.. . . . . . . . . . . . . . . . . . . . . . . . . 49
5.3 Why Different Monitoring Methods?. . .... 50
5.4 Dexcom G5 Mobile App................... 50
5.5 Dexcom G5 Mobile Receiver..............63
Chapter 6 - Starting a Sensor Session:
Inserting Sensor, Transmitter, and Starting
Your Session
69
6.1Overview.................................. 69
6.2 Safety Statements........................ 70
6.3 Prepping for Sensor Insertion.. ........... 72
6.4 Choosing Your Insertion Site. . ............ 75
6.5 Inserting Your Sensor..................... 76
6.6 Attaching Your Transmitter............... 80
6.7 Loose Sensor Pod......................... 81
6.8 Starting Your Sensor Session. . ........... 82
6.9Receiver Bluetooth® Tips.................86
6.10 Sensor Session Warmup..................90
Chapter 7 - Calibration
91
7.1Introduction............................... 91
7.2 Calibration Overview...................... 92
7.3 Safety Statements........................ 93
7.4 When to Calibrate......................... 95
7.5 Calibration Prompts.......................96
7.6 Preparing for Calibration................ 100
7.7 Ready? Set? Calibrate!.. ................ 100
7.8 Calibration Errors....................... 106
Chapter 8 - Ending Your Sensor Session and
Transmitter Session
109
8.1Introduction............................. 109
8.2 Safety Statements...................... 110
8.3 Ending Your Sensor Session............ 110
8.4 Remove Sensor Pod and Transmitter.. . 124
8.5 End of Transmitter Battery. . ............ 126
Part 3: Next Steps - Getting the Most
out of Your Dexcom® CGM
Chapter 9 - Home Screen, Rate of Change
Arrows, and Errors
133
Dexcom G5 Mobile System User Guide
Table of Contents
1
9.1
9.2
9.3
9.4
9.5
Introduction to Home Screens. . . . . . . . . .
Safety Statements. . . . . . . .. . . . . . . . . . . . . .
Overview of Home Screen.. . . . . . . . . . . . .
Rate of Change Arrows. . .. . . . . . . . . . . . . .
Error Messages. . . . . . . . . . .. . . . . . . . . . . . . .
133
133
134
146
147
Chapter 10 - Daily Events Affect Your
Glucose Trends and Patterns
10.1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.2What Is an Event?. . . . . . . . . . . . . . . . . . . . . . .
10.3 Entering Events.. . . . . . . . . . .. . . . . . . . . . . . . .
10.4 Viewing Events. . . . . . . . . . . .. . . . . . . . . . . . . .
153
153
153
162
170
Chapter 11 - Sensor Glucose Alarm and
Alerts173
11.1Introduction. . . . . . . . . . . . . . .. . . . . . . . . . . . . . 173
11.2 Safety Statements. . . . . . . .. . . . . . . . . . . . . . 174
11.3 Alarm and Alerts. . . . . . . . . .. . . . . . . . . . . . . . 175
11.4 Alarm and Alerts Screens.. . . . . . . . . . . . . . 177
11.5 App: Alarm/Alert Recommended
Settings.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
11.6 Receiver: Default Beeps and
Vibrations.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
11.7 Clearing Alarm/Alerts.. . . . . . . . . . . . . . . . . . 188
Chapter 12 - On the Go With G5: Customizing
Your Alarm and Alerts
191
12.1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
12.2 Safety Statement.. . . . . . . . .. . . . . . . . . . . . . . 192
12.3 Changing App Alarm and Alerts. . . . . . . . 192
12.4 Changing Receiver Alarm and Alerts. . . 204
Part 4: Everything Else G5
Chapter 13 - Warranty: The Fine Print 215
13.1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
13.2 Receiver Warranty Information. . . . . . . . . 215
13.3 Transmitter Warranty Information.. . . . . 217
13.4 Dexcom’s Obligations Under the Limited
Warranty.. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 219
Chapter 14 - How to Take Care of Your
Dexcom G5 Mobile CGM System
221
14.1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
14.2 Basic Maintenance.. . . . . . . . . . . . . . . . . . . . . 222
14.3Storage. ................................. 226
14.4 Checking App and Receiver
Information.............................. 227
14.5 System Disposal........................ 228
Chapter 15 - On the Go With Dexcom G5
Mobile CGM System: Getting Through
Security229
15.1Introduction............................. 229
15.2 Going Through Security. . ............... 229
Chapter 16 - Need Help? You’re Not
Alone!233
16.1 Dexcom Technical Support............. 233
16.2Patient Care Team...................... 234
16.3Sales Support Team.. ................... 235
16.4Corporate. . .............................. 235
Chapter 17 - Technical Information
237
17.1 Device Performance Characteristics... 237
17.2 Product Specifications.................. 275
17.3 FCC Requirements...................... 283
Chapter 18 - Troubleshooting
285
18.1Introduction............................. 285
18.2Safety Statements...................... 285
18.3Troubleshooting......................... 287
Chapter 19 - Symbols on Package Labels 299
Part 5: Sharing Is Caring
Chapter 20 - Dexcom Share™303
20.1 Learning About Dexcom Share......... 303
20.2Dexcom Share Overview................ 307
20.3Risks and Benefits...................... 309
20.4Safety Statement.. ...................... 310
20.5Setting up Dexcom Share. . ............. 313
20.6Using Dexcom Share.................... 323
20.7Dexcom Follow™ App................... 328
20.8Troubleshooting......................... 330
Index333
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Table of Contents
2
GETTING STARTED
•Glossary
•
Getting Started
•
Indications for Use and Safety Statement
•
Risks and Benefits
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Glossary
A1C
Blood test used to diagnose type 1 or 2 diabetes and to gauge
how well you’re managing your diabetes. The A1C test result
reflects your average blood sugar level for the past two to
three months.
Accessory Device
A device that connects with and extends a smart device. Such a
device requires the smart device connection for full functionality.
Examples are a smart watch or a Bluetooth headset.
Also see the Apple Watch and Smart Watch entries in this
glossary.
Alternative Site
Testing
Using a blood sample from non-fingertip (alternate) sites such as
the palm, forearm or upper arm for meter readings.
Do not use alternative site testing to calibrate the Dexcom G5®
Mobile CGM System, only use fingerstick measurement.
App
A self-contained program or piece of software designed to fulfill a
particular purpose; an application, especially as downloaded by a
user to a smart or mobile device.
The Dexcom G5 Mobile App was developed as a display for
continuous glucose monitoring.
Apple Watch
A specific smart watch that is compatible with iPhones only.
The Apple Watch is considered an accessory device as it
requires an active connection with the iPhone to have full
functionality.
Also see the Accessory Device and Smart Watch entries in this
glossary.
Blood Glucose (BG)
Value
BG is an abbreviation of blood glucose. Blood glucose value is the
amount of glucose in the blood measured by a BG meter.
Blood Glucose
Meter/Meter/BG
Meter
A blood glucose meter is a medical device used to measure how
much glucose is in the blood.
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Glossary
5
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Calibration
Calibration is a comparison or measurement between your meter’s
fingerstick BG values, and the sensor’s interstitial fluid glucose
readings. Although blood and interstitial fluids are similar, glucose
concentration is higher in your blood. Calibration allows alignment
between your sensor and meter readings.
When you calibrate, you take a fingerstick measurement from your
meter then enter the value into your receiver or smart device. The
system uses that value to verify the sensor glucose reading is on
track.
Continuous
Glucose
Monitoring (CGM)
Continuous glucose monitoring (CGM) systems use a sensor
inserted under the skin to check glucose levels in interstitial fluid. A
transmitter sends sensor glucose readings to a display device.
Users must confirm glucose levels with a BG meter before making a
change in treatment.
Contraindication
A safety statement outlining specific situations where the Dexcom
G5 Mobile should not be used because it may be harmful to you. The
risk of use clearly outweighs any possible benefit.
Hyperglycemia
High blood glucose. Same as “high” or high blood sugar.
Hyperglycemia is a characterized by an excess of glucose in
the bloodstream.
It’s important to treat hyperglycemia. If left untreated, hyperglycemia
can lead to serious complications.
The default high alert in the Dexcom G5 Mobile CGM System is set
to 200 mg/dL. Consult your healthcare professional to determine the
appropriate hyperglycemic setting for you.
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Dexcom G5 Mobile System User Guide
Glossary
6
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Hypoglycemia
Low blood glucose. Same as “low” or low blood sugar.
Hypoglycemia is characterized by a low level of glucose in
the bloodstream.
It’s important to treat hypoglycemia. If left untreated, hypoglycemia
can lead to serious complications.
The default low alert in the Dexcom G5 Mobile CGM System is set
to 80 mg/dL. Consult your healthcare professional to determine the
appropriate hypoglycemic setting for you.
Indication
A condition making a particular treatment or procedure advisable.
How, for what purposes, and under what circumstances you should
use the Dexcom G5 Mobile CGM System. Indications let you know
who should use the Dexcom G5 Mobile CGM System and when.
IP
The International Electrotechnical Commission (IEC) is a nonprofit,
non-governmental, international organization created to produce
safety standards for electronics. One of the safety standards it
designed is the Ingress Protection (IP) Marking which classifies and
rates how protected an electronic device is against dust, water,
accidental contact, etc.
IP ratings are numerical, with the number based on the conditions
the electronic device comes across.
An IP22 rating lets you know your electronic device won’t allow you
to stick your fingers in it and won’t get damaged or be unsafe during
specific testing with water dripping down.
Jailbroken
The removal of limitations and security measures set by the
manufacturer on a smart device. The removal poses a security risk
and data may become vulnerable.
Do not use, install or run the Dexcom G5 Mobile App on a jailbroken
smart device. The app may not work correctly on a jailbroken smart
device.
Landscape
If your smart device is oriented sideways.
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Dexcom G5 Mobile System User Guide
Glossary
7
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mg/dL
Milligrams per deciliter. The standard unit of measure for glucose
readings in the United States.
Portrait
If your smart device is oriented vertically.
Precaution
A safety statement regarding any special care to be exercised by
you or your healthcare professional for the safe and effective use
of the Dexcom G5 Mobile CGM System.
RF
Radio-frequency transmission used to send glucose information
from the transmitter to the receiver or smart device.
Safety Statement
A statement of the intended uses of Dexcom G5 Mobile
CGM System and relevant warnings, precautions,
and contraindications.
Sensor Session
The seven day monitoring period after inserting a new sensor.
During this time frame, your glucose is being monitored and
reported every five minutes, with data being sent to your
display device(s).
Smart/Mobile
Device
A smart/mobile device is an electronic, mobile device that can
wirelessly connect to networks over Wi-Fi or a cellular data
connection (3G, 4G, etc.).
Examples of smart/mobile devices are smartphones and tablets.
Smart Watch
A watch that communicates with and extends a smart device.
These devices typically require a smart device connection for full
functionality. An example is the Apple Watch.
Also see the Apple Watch and Accessory Device entries in this
glossary.
Today View
A feature found on iOS smart devices used to quickly access
information from any activity or from the lock screen. Access by
swiping down from the top edge of your device.
Warning
A safety statement letting you know the following feature
has important hazard information. Describes serious and life
threatening circumstances of using the Dexcom G5 Mobile CGM
System, their consequences, and how to avoid the hazard.
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Glossary
8
Chapter 1
Getting Started:
Beginning Your Dexcom G5 Mobile Continuous
Glucose Monitoring (CGM) System Journey
1.1 Introduction
Welcome to the Dexcom G5 Mobile family!
We are excited you chose us to partner with you in your journey to manage your diabetes. As
a continuous glucose monitoring (CGM) device, the Dexcom G5 Mobile CGM System allows
you to break free from constant fingersticks. But how do you use the Dexcom G5 Mobile
CGM System? What are its features? Do you need to avoid anything?
Where do you even begin?
This chapter is the first step to answering these and many other questions.
After this chapter, you will be able to:
• Describe different training resources
• Locate tutorials about using the Dexcom G5 Mobile CGM System in your diabetes
management
• Find Dexcom G5 Mobile System’s step-by-step instructions
• Recall how to use the User Guide
• Explain why you need a Dexcom® account
We have numerous resources available to help you to get the most out of your Dexcom
G5 Mobile CGM System. Between our self-paced training resources and our friendly and
knowledgeable Dexcom customer support teams, help is always available.
First Things First - Learning How to Learn
Knowing about the Dexcom G5 Mobile CGM System is your first step in creating a successful
CGM experience. Before using it, learn about it.
You have numerous self-paced resources, helping you get to know the Dexcom G5 Mobile
CGM System:
Dexcom G5 Mobile System User Guide
Beginning Your Dexcom G5 Mobile Continuous Glucose Monitoring (CGM) System Journey
9
1. Tutorials
2. Quick Start Guide
3. User Guide
No matter which resource you select, make sure you review them prior to using your new
CGM system.
1.2 Self-Paced Resources
Tutorials
Along with step-by-step instructions, our tutorials illustrate how real-time CGM can assist in
your daily diabetes management. The following is a list of tutorials and how to access them.
Online Tutorials
First Steps With Your Dexcom CGM
Designed for those who have never used a Dexcom CGM. This tutorial covers what to expect
in your first week and includes links to step-by-step videos on how to insert your sensor,
calibrations, ending a sensor session, etc.
Next Steps With Your Dexcom CGM
Just finished First Steps or already familiar with how a CGM can benefit you? This
tutorial covers looking at trends and introduces some advanced features including our
reporting tools.
Accessing Online Tutorials:
From dexcom.com homepage, click Support, click Training.
Once you have viewed the online tutorials you should be pretty comfortable with what CGMs
do and how the Dexcom G5 Mobile CGM System can help you.
Offline Tutorials
You don’t need to be tied to the Internet to view our instructional tutorials, they’re also
available offline.
Accessing Offline Tutorials:
USB Card in the receiver package.
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Beginning Your Dexcom G5 Mobile Continuous Glucose Monitoring (CGM) System Journey
10
Written Mobile Resources
Quick Start Guide (QSG)
The Dexcom G5 Mobile Quick Start Guide compliments the tutorials by proving the same
step-by-step instructions in a booklet form or within the app.
One of the great things about the QSG is you can use it in conjunction with the videos, taking
notes as you go!
Accessing the QSG:
Booklet in the receiver package.
Both the tutorial and the QSG give you brief look at the Dexcom G5 Mobile CGM System. But
what if you want more detailed information?
User Guide
Your Dexcom G5 Mobile CGM System reference book!
This user guide gives you the most extensive overview of the system detailing features,
important safety information and so much more.
To download an ebook of the user guide or request a printed user guide, visit
dexcom.com/guides.
The Dexcom G5 Mobile User Guide is grouped into six separate parts:
Part 1: Getting Started
1. Glossary
2. Getting Started
a. Learning how to learn about the Dexcom G5 Mobile CGM System
b. Registering at dexcom.com
3. Indications for Use and Safety Statement
4. Risks and Benefits
Part 2: Let’s G5®! The Basics
1. Introduction to the Dexcom G5 Mobile CGM System
2. Choose and Set up Your Display Device(s)
3. Initiating a Sensor Session: Inserting the Sensor & Transmitter
4. Calibration
5. End a Sensor Session
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11
Part 3: Next Steps - Getting the Most out of Your Dexcom CGM
Once you are up and running, how you can maximize the Dexcom G5 Mobile features:
1. Reading Trend Graph Screens and Recognizing Trends
2. Events
3. Alarm and Alerts
4. Sounds for Alarm, Alerts and System Messages
Part 4: Everything Else G5
1. Warranty
2. Dexcom G5 Mobile CGM System Maintenance
3. Travel Tips
4. Customer Service Contacts
5. Technical Information
6. Troubleshooting
7. Package Label and Product Symbols
At the end of your Dexcom G5 Mobile System User Guide, Part 5, is the user guide of a new
Dexcom G5 Mobile System feature: Dexcom Share™.
Part 5: Sharing is Caring
1. Dexcom Share
a. What Is Dexcom Share?
b. Setting Up Dexcom Share
c. How to Use Dexcom Share
d. Your Followers
e. Troubleshooting
Part 6
1. Index for Dexcom G5 Mobile System and Dexcom Share
How to Use Your User Guide
All chapters in the Dexcom G5 Mobile User Guide are laid out the same way:
The beginning of each chapter lists what you’ll be able to do after you have finished, after
that, any applicable safety statements you need to know, followed by the chapter’s content.
At the end, there’s a recap of what was covered and what’s in the next chapter.
1.3 Your Dexcom Account
You’ll need a username and password to set up the Dexcom G5 Mobile App and
for reordering.
Dexcom G5 Mobile System User’s Guide
Beginning Your Dexcom G5 Mobile Continuous Glucose Monitoring (CGM) System Journey
12
If you haven’t already done so, go to dexcom.com and set up your own account.
Or, if you prefer, the Dexcom G5 Mobile App walks you through creating your log in
credentials as part of your initial app set up.
Summary
Now You Can:
• Describe different training resources
• Locate tutorials about using a real-time CGM in your diabetes management
• Find Dexcom G5 Mobile System’s step-by-step instructions
• Recall how to use the user guide
• Explain why you need a Dexcom account
What’s Next?
Now you are familiar with how to use this user guide and where to go for help.
Throughout the user guide you’ll see color-coded boxes containing Safety Statements. The
next chapter, Indications for Use and Safety Statement, lists all Safety Statements along with
how to read and interpret them.
Next you’ll learn about when and how to use the Dexcom G5 Mobile CGM System safely.
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Chapter 2
Getting Started:
Indications for Use and Safety Statement
2.1 Introduction
We want the Dexcom G5 Mobile CGM System to be a valuable tool in your diabetes
management. Like any system, there are steps to take to get the most out of it. As excited as
you are about getting started, did you know if you just took Tylenol®, maybe you should wait?
Did you know taking Tylenol is contraindicated?
In this chapter, you’ll learn about some key areas that might prevent you from having the best
CGM experience, or, if you’re not careful, might even harm you or the system. You’ll even
learn what a contraindication is!
2.2 Important User Information
Each part of your system has instructions including indications, contraindications, warnings,
precautions, and other important user information. Please review the instructions for each
part of the system in this user guide before using any of the Dexcom G5 Mobile CGM System.
This chapter is important to read. It helps you use the Dexcom G5 Mobile CGM System safely
and covers:
• What is a Safety Statement?
○○ Telling the difference between an indication and a contraindication
○○ Explaining why warnings are so important
○○ Defining precautions
• How to read a chapter’s Safety Statement
• Overview of Safety Statements
Let’s start with definitions, look at a Safety Statement example used throughout the User
Guide, and then review the Safety Statements broken down into the system’s components.
Safety Statement
A Safety Statement is a brief statement of the Dexcom G5 Mobile CGM System’s indications,
relevant warnings, precautions, or its contraindications (when to avoid using it). The Safety
Dexcom G5 Mobile System User Guide
Indications for Use and Safety Statement
15
Statements are meant to keep you and the system safe while using the Dexcom G5 Mobile
CGM System:
1)Indications
How, for what purposes, and under what circumstances you should use the Dexcom G5
Mobile CGM System. Indications let you know who should use the Dexcom G5 Mobile
CGM System and when. Indications are the who, what, and why of the Dexcom G5 Mobile
CGM System.
2)Contraindications
Contraindications let you know when not to use the Dexcom G5 Mobile CGM System. If
used during these situations, you may hurt yourself or the system, the risk of use clearly
outweighs the benefit.
3)Warning
Important hazard information: Describes serious or life threatening circumstances to stay
away from while using the Dexcom G5 Mobile CGM System, their consequences, and how
to avoid danger.
4)Precaution
Special steps you need to take while using the Dexcom G5 Mobile CGM System, preventing
minor or moderate injury to either you or the system.
2.3 Safety Statements
This user guide presents Safety Statement two ways:
1. In this chapter’s Overview of Safety Statements
○○ Lists all Safety Statements
○○ Includes a section reviewing how the statements are formatted
2. Within a chapter
○○ Lists only those statements applicable to the chapter
Chapter’s Safety Statements
Each chapter will list all applicable indications, contraindications, warnings, and precautions.
Some chapters will have multiple Safety Statements; others have none. Safety Statements
are located towards the front so you can keep them in mind as you learn about that chapter’s
topic. The same statement may be repeated throughout the user guide. It’s important
to recognize which factors could prevent the system from working correctly, or even
harming you.
Dexcom G5 Mobile System User Guide
Indications for Use and Safety Statement
16
Within chapters, each color coded Safety Statement is in a box, broken down into
four sections:
1. Type of statement
a. Bold and color-coded
▪▪ WARNING-Red
▪▪ PRECAUTION-Blue
▪▪ INDICATION-Green
▪▪ CONTRAINDICATION-Purple
2. Do’s/Don’ts
a. An action you should or should not take
b. Italicized
3. Why
a. A statement of the potential harm
4. Consequences
a. What could happen if you don’t follow the instructions
The following is an example of a chapter’s Safety Statement and how to read it.
WARNING
Do: Calibrate at least once every 12 hours.
Why: Calibrating less often than every 12 hours might cause inaccurate sensor
glucose readings.
Consequences: Missing severe low (hypoglycemia ) or high (hyperglycemia) Alarm
or Alerts.
Since this is a WARNING, you know it covers important safety information. Italics are the
Do/Don’t steps to follow: Calibrate at least once every 12 hours. Below the italics is a
statement explaining Why you need to follow the steps: Calibrating less often than every
12 hours might cause inaccurate sensor glucose readings. And finally what happens, or the
Consequences, if you don’t: missing a severe low (hypoglycemia) or high (hyperglycemia)
glucose event.
2.4 Overview of Safety Statements
This section provides a review of Safety Statements containing the same elements
described above (type of Safety Statement, an action, a statement of potential harm, and
consequences) listed in a narrative, not boxed, format. Here you’ll learn what indications
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Indications for Use and Safety Statement
17
and contraindications are and what to do to keep you safe and the system in proper
working order.
Safety Statements are broken down into two major categories. First, general CGM system
Warnings—reviews warnings and precautions you take with most CGM systems—and
second, Hardware/Software Warnings and Precautions list warnings and precautions specific
to the Dexcom G5 Mobile CGM System components.
Indications and Contraindications
Indications
What are the Dexcom G5 Mobile CGM System indications? Well, in technical terms, the
indications are:
The Dexcom G5 Mobile Continuous Glucose Monitoring (CGM) System is a glucose
monitoring system indicated for detecting trends and tracking patterns in persons (age 2
years and older) with diabetes. The system is intended for single patient use and requires
a prescription.
The Dexcom G5 Mobile CGM System is indicated for use as an adjunctive device
to complement, not replace, information obtained from standard home glucose
monitoring devices.
The Dexcom G5 Mobile CGM System aids in the detection of episodes of hyperglycemia
and hypoglycemia, facilitating both acute and long-term therapy adjustments, which may
minimize these excursions. Interpretation of the Dexcom G5 Mobile CGM System results
should be based on the trends and patterns seen with several sequential readings over time.
In Layman’s Terms
But what does that mean? Indications are the who, what, and why of the Dexcom G5 Mobile
CGM System.
Who
The Dexcom G5 Mobile CGM System is a single patient use device (meaning you can’t share
the components with others) for people 2 years or older with diabetes.
What
The Dexcom G5 Mobile CGM System is a prescription-only glucose monitoring device.
Dexcom G5 Mobile CGM System tracks your glucose patterns and detects trends. Working
with your home blood glucose (BG) meter, the system is meant to complement, not replace,
your BG meter.
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Why
The CGM system’s trend and pattern information, its glucose Alarm/Alerts, combined with
your meter’s actual BG value, can help you manage your diabetes.
By identifying low and high glucose level periods, the Dexcom G5 Mobile CGM System allows
you to take action when needed and create long-term management strategies with your
healthcare professional. Using trend information to see your highs and lows helps you stay
inside your target range.
The Dexcom G5 Mobile CGM System’s trend and pattern information is based on a series of
sensor glucose readings taken over a period of time.
Work with your healthcare professional and create a game plan on how to best use your
trend and pattern information in managing your diabetes.
Contraindications
Contraindications let you know when not to use the Dexcom G5 Mobile CGM System; you
may hurt yourself or damage the system. Remember, if used during certain situations, the
risk of use may clearly outweigh any potential benefit. Within the chapters, contraindications
are in purple boxes.
MRI/CT/ Diathermy
Remove the Dexcom G5 Mobile CGM System (sensor, transmitter, and receiver)
before Magnetic Resonance Imaging (MRI), Computed Tomography (CT) scan, or
high-frequency electrical heat (diathermy) treatment.
The system hasn’t been tested during MRI, CT scans, or with diathermy treatment. Magnetic
fields and heat could damage the components, stopping sensor glucose readings or
Alarm/Alert notifications. Without sensor glucose readings or Alarm/Alert notifications, you
might miss a severe low or high glucose event.
Medications
Taking medications with acetaminophen (such as Tylenol or Excedrin® Extra Strength)
while wearing the sensor may falsely raise your sensor glucose readings. The level of
inaccuracy depends on the amount of acetaminophen active in your body and is different for
each person.
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2.5 General CGM System Warnings
Warnings
Warnings outline important hazard information, describing any serious and/or life threatening
situations, their consequences, how to avoid danger while using the system and how to
protect the Dexcom G5 Mobile CGM System from harm.
Review Training Materials
Thoroughly review the training materials included with your Dexcom G5 Mobile CGM System
before using.
Incorrect use could lead you to misunderstand system information or might affect its
performance and you might miss a severe low or high glucose event.
Treatment Decisions
The Dexcom G5 Mobile CGM System does not replace your BG meter.
When making treatment decisions, such as the amount of insulin you need, only use your
BG value. Don’t use the Dexcom G5 Mobile CGM System sensor glucose readings because
readings can be different from your BG value. If sensor glucose readings are used in
determining treatments, it could result in you missing a severe low or high glucose event.
Don’t Ignore Low/High Symptoms
If your sensor glucose readings don’t match your symptoms, measure your BG with a
fingerstick. You may miss a severe low or high glucose event.
Who Shouldn’t Use
The Dexcom G5 Mobile CGM System was not evaluated for the following persons:
• Pregnant women
• Persons on dialysis
Do not use the Dexcom G5 Mobile System in critically ill patients. It is not known how
different conditions or medications common to the critically ill population may affect
the performance of the system. Sensor glucose readings may be inaccurate in critically
ill patients.
The system’s accuracy hasn’t been tested in people falling into these groups and sensor
glucose readings may be inaccurate, resulting in missing a severe low or high event.
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2.6 Calibration Warning and Precautions
Calibration is the process of making sure your sensor continues to be accurate. Your sensor
doesn’t automatically know what your glucose levels are—you have to teach your system
what a given BG value is by entering in a KNOWN glucose value from your BG meter.
Warning
Calibrate on Schedule
Calibrate at least once every 12 hours. Calibrating less often than every 12 hours might
cause sensor glucose readings to be inaccurate, resulting in you missing a severe low or high
glucose event.
Precautions
Be Accurate, Be Quick
Enter the exact BG value displayed on your BG meter within five minutes of a fingerstick.
Entering the wrong BG values, or waiting more than five minutes before entry, might affect
sensor performance, resulting in you missing a severe low or high event.
Significant Glucose Rate Changes
Don’t calibrate when your BG is changing at a significant rate: more than 2 mg/dL
per minute.
Look for rate of change arrows on your display device screen and don’t calibrate when
you see:
• A single arrow, pointing up
○○ Rising 2-3 mg/dL each minute
• Two arrows pointing up
○○ Rising more than 3 mg/dL each minute
• Single arrow pointing down
○○ Falling 2-3 mg/dL each minute
• Two arrows pointing down
○○ Falling more than 3 mg/dL each minute
Calibrating during a significant rise/fall of your BG may affect accuracy of sensor glucose
readings, resulting in you missing a severe low or high glucose event.
Fingerstick Only
Only use fingerstick measurements from your BG meter for calibration.
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Alternative site BG values from your arms, palm of your hand, etc., may be different and less
accurate than your fingerstick BG values. Using alternative for calibration might affect sensor
performance, resulting in you missing a severe low or high glucose event.
Prior to Initial Calibration: Data/Alarm/Alert
After starting a new sensor session, until completing your initial calibrations you won’t
receive any sensor information such as readings, Alarm or Alerts. Without these, you may
miss a severe low or high glucose event.
Continue to take fingerstick measurements during a new sensor warmup period.
Now that we have reviewed common CGM Safety Statements, let’s focus the Dexcom G5
Mobile CGM System components.
2.7 System/Hardware/Software Warnings and
Precautions
In this section, you will learn how to safely use the Dexcom G5 Mobile CGM System’s
hardware and software. Some sections have either Precautions or Warnings, others will
have both.
Sensor/Sensor Pod Warnings and Precautions
Warnings
Sensor Breaking Off
On rare occasions, the sensor wire may break or detach from the sensor pod.
Within 24 hours of experiencing a broken sensor wire, please call our 24/7 Technical Support
department, toll free at 1.877.339.2664 or toll at 1.858.200.0200.
If a sensor wire breaks under the skin with no portion of it visible, don’t remove it. Contact
your healthcare professional if you have redness, swelling, or pain at the insertion site.
Placement
Do not insert the sensor component of the Dexcom G5 Mobile System in a site other than
the belly/abdomen (ages 2 years and older) or the upper buttocks (ages 2 to 17 years). The
placement and insertion of the sensor component of the Dexcom G5 Mobile System is not
approved for other sites.
If placed in other areas, the Dexcom G5 Mobile System may not function properly.
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Storage
During a sensor’s shelf life, store it between 36° F-77° F. While you don’t need to keep your
sensor in a refrigerator, you can as long as the refrigerator is between 36° F-77° F.
Never store sensors and/or sensor packages in a freezer.
Storing the sensor incorrectly might cause the sensor glucose readings to be incorrect,
resulting in you missing a severe low or high glucose event.
Precautions
Expiration Date
Don’t use expired sensors. Before inserting, always check the package label for the
expiration date using the YYYY-MM-DD format.
If past the expiration date, don’t use because the sensor glucose readings might not be
accurate, resulting in you missing a severe low or high glucose event.
Sensor Package
Don’t use sensor if its sterile package has been damaged or opened. Using a non-sterile
sensor might cause infection.
Clean and Dry Before Using
Before opening the sensor package, wash your hands with soap and water, then dry. If your
hands are dirty while inserting the sensor, you may contaminate the insertion site and get
an infection.
Before sensor insertion, clean the skin with alcohol wipes to prevent infections. Don’t insert
the sensor until the cleaned insertion site is dry, and free from any lotions or perfumes.
If your insertion site is not clean and completely dry, you run the risk of infection or the
sensor pod not sticking and falling off.
Sensor Placement
Change the site where you place the sensor with each new insertion. Using the same site too
often might not allow the skin to heal, causing scarring or skin irritation.
Sensor placement is important. Make sure the area you place your sensor won’t:
• Be bumped, pushed, or squeezed
• Have scars, tattoos, or irritation
Insertion in these areas might affect sensor performance, resulting in you missing a severe
low or high glucose event.
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Avoid injecting insulin or placing an insulin pump infusion set within three inches of the
sensor. The insulin might affect sensor performance, resulting in you missing a severe low or
high glucose event.
Transmitter Warnings and Precautions
Warnings
Inspect Transmitter
If your transmitter is damaged or cracked in any way, don’t use it. Damaged components
could create an electrical safety hazard or malfunction, which might cause electrical shocks.
Choking
The transmitter is small and may pose a choking hazard. Don’t put it in your mouth or allow
children to play with it.
Precautions
Reusable: Don’t Throw Away
When ending a session, don’t throw away the transmitter.
The transmitter is reusable and can be used in multiple sensor sessions. Keep using it until
the system notifies you the transmitter battery is about to expire.
Don’t Share Your Transmitter
Never share your transmitter with another person. The Dexcom G5 Mobile CGM System is a
prescription-only medical device and is meant, or indicated, for your use only.
Your transmitter is tied to your readings. If used by someone else, your reports, Alarm and
Alerts, etc., would be wrong, resulting in you missing a severe low or high glucose event.
System Precautions
Next are precautions for the receiver, transmitter, sensor and the system.
Precautions
Use Correct Transmitter, Receiver, and Sensor
Different generations’ transmitters and receivers aren’t interchangeable with each other.
The Dexcom G5 Mobile CGM System’s transmitter and receiver are not compatible with the
Dexcom G4® PLATINUM CGM System’s transmitter and receiver. The Dexcom G5 Mobile
CGM System won’t work if you mix receiver and transmitter components from different
generations, resulting in you missing a severe low or high glucose event.
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You can use a Dexcom G4® PLATINUM Sensor with the Dexcom G5 Mobile CGM System.
Before using the sensor, make sure the sensor label says “Dexcom G5 Mobile/G4 PLATINUM
Sensor,” or “Dexcom G4 PLATINUM Sensor.”
System Accuracy
System accuracy may be affected when your glucose is changing at a significant rate such
as during exercise or after a meal.
Significant glucose rise/fall rates:
• Rising 2-3 mg/dL each minute
• Rising more than 3 mg/dL each minute
• Falling 2-3 mg/dL each minute
• Falling more than 3 mg/dL each minute
Receiver and Smart Device Precautions
The Dexcom G5 Mobile Receiver and your smart device share some warnings and
precautions.
Precautions
Communication Range
Do not separate the transmitter from the receiver or smart device by more than 20 feet.
The transmission range from the transmitter to receiver or smart device is up to 20 feet
without obstruction.
Types of obstruction differ and not all have been tested. Obstructions can include water,
walls, metal, etc. If your transmitter and display device(s) are more than 20 feet from each
other or are separated by an obstruction, they might not communicate, resulting in you
missing a severe low or high glucose event.
Water is often the biggest culprit in reducing the communication distance between the
transmitter and display devices. Take special care when swimming, getting into a pool,
bathtub, shower, etc.
Setting Alarm/Alert Notifications
When using both a receiver and a smart device, you must set your settings separately in
each. If you set up one device and then use another, you might not get an Alarm or Alerts,
causing you to miss a severe low or high glucose event.
Using an accessory device (like a smart watch) might override your smart device sounds.
Alarms or Alerts might vibrate or be heard on the accessory instead of your smart device.
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After connecting any accessories, make sure that the smart device settings allow you to
continue receiving Alarms or Alerts on the smart device.
Is It On?
If the receiver or smart device is turned off (Shut Down), it will not display sensor data,
information, Alarm or Alerts. Make sure they are turned on; otherwise you won’t get sensor
glucose readings or Alarm or Alerts, causing you to miss a severe low or high glucose event.
Smart Device Warnings
Next are warnings for just your smart device.
Warnings
Smart Device Settings
The Dexcom G5 Mobile App can’t override your smart device’s internal settings. Also,
accessory devices (like a smart watch or other wearable smart devices) might override your
smart device’s Alerts and Alarm.
To receive Alarm or Alerts you must:
1. Make sure Dexcom G5 Mobile App Notifications are turned on in the Setting’s menu.
2. Verify app hasn’t been shut down.
3. Turn Bluetooth on.
4. Turn off Do Not Disturb (if available on your smart device).
5. Restart app after device is restarted.
6. Set Volume at a level you can hear.
7. Do not close app, always run app in the background.
8. Make sure accessory devices do not override your smart device settings.
If your settings are incorrect, you might miss a severe low or high glucose event.
Dexcom G5 Mobile CGM System Alarm/Alert vibrations aren’t any different from other
vibrating apps on your smart device. Medical device apps, like the Dexcom G5 Mobile App,
don’t have any special priorities over your smart device’s features. Dexcom G5 Mobile App
notifications or alerts may sound or feel the same as notifications from another app. The only
way to know is look at the screen.
Can’t Hear Your Alarm or Alert?
An Alarm or Alert can’t be heard through your smart device’s speakers if headphones are
plugged in.
Make sure you unplug your headphones when you are done using them, otherwise you might
not hear an Alarm or Alert, causing you to miss a severe low or high glucose event.
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Receiver Warning and Precaution
Warning
Don’t Use Damaged Goods
If your receiver is damaged or cracked, don’t use it. This could create an electrical safety
hazard or malfunction, causing possible electrical shocks.
Precaution
Keep Receiver Dry
Keep the USB port cover on the receiver closed whenever the USB cable is not attached and
do not submerge in water.
If water gets into the USB port, the receiver could become damaged and stop displaying
readings or providing alerts; you might miss a severe low or high glucose event.
Caution
U.S. law restricts the sale of the Dexcom G5 Mobile CGM System to sale by or on order of
a physician.
Summary
Now You Can:
• Define a Safety Statement
○○ Explain the difference between an indication and a contraindication
○○ Describe the importance of warnings
○○ Describe what a precaution is
• Correctly read a chapter’s Safety Statement
• Provide an overview of Safety Statements by category
What’s Next?
In our next chapter, you will learn about the risks and benefits of using Dexcom’s G5 Mobile
CGM System.
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Chapter 3
Getting Started:
Risks and Benefits
When using any medical device, there are risks and benefits. In this chapter, you’ll learn what
they are, helping you decide if Dexcom’s G5 Mobile CGM System is right for you.
First, let’s review some possible risks.
3.1 Risks
There are some risks with using real-time CGM.
Not Receiving Alarm/Alerts
If you aren’t getting your CGM Alarm/Alerts, you run the risk of not knowing you are having a
severe glucose low or high.
Some hardware issues preventing Alarm/Alerts:
• Alert function is turned off
• Transmitter and display device is out of range
• Receiver or smart device isn’t showing sensor glucose readings
• Receiver or smart device battery is dead
• Unable to hear Alarm/Alerts or feel vibration
• App not running in the background
• Smart device is in Do Not Disturb
See Troubleshooting or recommended settings in Chapter 11 for more information.
Sensor Glucose Reading Different From Meter’s
The sensor glucose reading can be different than your meter’s BG value.
If the sensor’s glucose reading is higher than your meter’s BG value, you may miss a Low
Alert. As an example, your last sensor’s glucose reading was 82 mg/dL, whereas your BG
value shows 78 mg/dL. If your Low Alert is set at 80 mg/dL, you won’t receive an Alert
because the sensor glucose reading is 82 mg/dL.
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If you’re not receiving an Alarm/Alert, and not taking fingerstick measurements, you may be
unaware of low or high glucose levels.
Sensor Insertion Risks
Inserting the sensor and wearing the adhesive patch might cause infection, bleeding, pain or
skin irritations (e.g., redness, swelling, bruising, itching, scarring or skin discoloration). The
chance of this happening is low. The Dexcom G5 Mobile CGM System uses the same sensor
as the previous CGM system—the Dexcom G4 PLATINUM. The Dexcom G4 PLATINUM
System clinical studies and compliant data showed slight redness and swelling occurring
only in a few patients.
During Dexcom’s G4 PLATINUM System’s clinical study, no sensor wires broke however
there is a remote chance sensor fragments could remain under your skin if the sensor breaks
during normal wear. Sterile broken sensor wires don’t pose a significant medical risk.
If a sensor wire breaks off or detaches and remains under your skin, contact your healthcare
professional and call Dexcom’s Technical Support toll free, 24/7, at 1.877.339.2664 or toll at
1.858.200.0200 within 24 hours.
Those are the risks, let’s now review the benefits!
3.2 Benefits
Daily habits impact your BG levels. With the Dexcom G5 Mobile CGM System, you can track
how your exercise, carbs, stress levels, medication, or illness, influences your glucose levels.
Knowing Your Trends
Wearing the Dexcom G5 Mobile CGM System on a consistent and ongoing basis helps you
manage your diabetes. Providing sensor glucose readings every five minutes, for up to seven
days, the Dexcom G5 Mobile CGM System helps you detect trends and patterns. Trend
information reveals where your glucose is now, where your glucose is heading, and how fast
it’s changing.
Understanding your trends allows you to take proactive action, helping you avoid dangerously
low or high glucose values.
Using Dexcom Share (see Part 5) allows friends and family, your Followers, to monitor your
glucose activity, adding another layer of support and peace of mind.
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Helps in Your Diabetes Management
The Alarm/Alerts features (see Chapter 11) keep you aware of your glucose levels. Alerts
notify you when your glucose goes outside your target range or is rapidly falling or rising,
letting you to take action before you get too low or too high. The Urgent Low Alarm lets you
know when you are dangerously or urgently low, going below 55 mg/dL. By taking corrective
measures, you lessen the time spent in your low/high range, while increasing time in your
targeted range (Garg S. Z., 2006) (Battelino T, 2011).
Real-time CGM can help improve your A1C as well as improve the quality of your glucose
control. If you are at or below 7%, using a CGM such as Dexcom’s G5 Mobile CGM System,
helps reduce hypoglycemia (Tamborlane, W. V.,2008).
Lowering your A1C, increasing your time in your target range while decreasing time in
low/high BG range is believed to reduce your risk of diabetes related complications (Ohkubo,
Y. 1995).
In some cases, patients perceived an increase in their quality of life and peace of mind
when using real-time CGM. (Juvenile Diabetes Research Foundation Continuous Glucose
Monitoring Study Group. 2010)
What’s Next?
You’ve read the Safety Statements, reviewed the risks and benefits; now let’s take a look at
Dexcom’s G5 Mobile CGM System!
References:
Battelino, T., Phillip, M., Bratina, N., Nimri, R., Oskarsson, P., & Bolinder, J. (2011). Effect
of Continuous Glucose Monitoring on Hypoglycemia in Type 1 Diabetes. Diabetes Care,
34(4), 795-800.
The Diabetes Control and Complications Trial Research Group. The Effect of Intensive
Treatment of Diabetes on the Development and Progression of Long-Term Complications in
Insulin-Dependent Diabetes Mellitus. The New England Journal of Medicine, Vol. 329, No. 14.
(September 1993), pp. 977-986.
Garg, S., Zisser, H., Schwartz, S., Bailey, T., Kaplan, R., Ellis, S., & Jovanovic, L. (2005).
Improvement in Glycemic Excursions With a Transcutaneous, Real-Time Continuous Glucose
Sensor: A randomized controlled trial. Diabetes Care, 29(1), 44-50.
Juvenile Diabetes Research Foundation Continuous Glucose Monitoring Study Group. (2009).
The Effect of Continuous Glucose Monitoring in Well-Controlled Type 1 Diabetes, Diabetes
Care, 32(8), 1378-1383.
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Juvenile Diabetes Research Foundation Continuous Glucose Monitoring Study Group.
(2009). Sustained Benefit of Continuous Glucose Monitoring on A1C, Glucose Profiles, and
Hypoglycemia in Adults With Type 1 Diabetes. Diabetes Care, 32(11), 2047-2049.
Juvenile Diabetes Research Foundation Continuous Glucose Monitoring Study Group (2010).
Quality-of-Life Measures in Children and Adults with Type 1 Diabetes. Diabetes Care, 33(10),
2175-2177.
Ohkubo, Y., Kishikawa, H., Araki, E., Miyata, T., Isami, S., Motoyoshi, S., & Shichiri, M. (1995).
Intensive Insulin Therapy Prevents the Progression of Diabetic Microvascular Complications in
Japanese Patients with Non-insulin-dependent Diabetes Mellitus: A Randomized Prospective
6-year Study. Diabetes Research and Clinical Practice, 28(2), 103-117.
Tamborlane, W. V., Beck, R. W., Bode, B. W., Buckingham, B., Chase, H. P., Clemons, R., ... &
Xing, D. (2008). Continuous Glucose Monitoring and Intensive Treatment Of Type 1 Diabetes.
The New England Journal of Medicine, 359(14), 1464-1476.
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LET’S G5! THE BASICS
•
Introduction to the Dexcom G5 Mobile CGM System
•
Initial Set-Up
•
Starting a Sensor Session: Inserting the Sensor & Transmitter
•Calibration
•
Ending a Sensor Session
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Chapter 4
Let’s G5! The Basics:
What Is the Dexcom G5 Mobile CGM System?
4.1 System Description
Now it’s time to get an overview of the Dexcom’s G5 Mobile CGM System.
After this chapter, you’ll be able to:
• Explain the Dexcom G5 Mobile CGM System
• Describe options to view trends
• Locate your historical readings
• Recognize system components
• Explain each part’s function
4.2 Safety Statement
If you’ve used the Dexcom G4 PLATINUM CGM System, you might still have its transmitter
or receiver. While you can use the sensors across the different generations (look for “G5
Mobile” or “G4 PLATINUM” on the sensor’s package), you can’t mix the transmitter or
receiver between the two systems.
WARNING
Don’t: The Dexcom G5 Mobile CGM System was not evaluated for the following persons:
• Pregnant women
• Persons on dialysis
Do not use the Dexcom G5 Mobile System in critically ill patients. It is not known how
different conditions or medications common to the critically ill population may affect
the performance of the system. Sensor glucose readings may be inaccurate in critically
ill patients.
Consequences: The system’s accuracy hasn’t been tested in people falling into these
groups and sensor glucose readings may be inaccurate, resulting in missing a severe low
or high event.
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PRECAUTION
Don’t: Never mix Dexcom G5 Mobile’s Transmitter or Receiver with Dexcom G4
PLATINUM’s Transmitter or Receiver.
Why: The Dexcom G5 Mobile CGM System’s Transmitter and Receiver are not compatible
with the Dexcom G4 PLATINUM CGM System’s Transmitter and Receiver. The Dexcom G5
Mobile CGM System won’t work if you mix Receiver and Transmitter components from
different generations.
Consequences: Missing a severe low (hypoglycemia) or high (hyperglycemia) event.
4.3 The Dexcom G5 Mobile CGM System
CGM
The Dexcom G5 Mobile Continuous Glucose Monitoring (CGM) System is a medical device
you use on yourself. It allows you to continually see your sensor glucose readings, updated
every five minutes for up to 7 days, without the bother of taking constant fingerstick
measurement. Your sensor glucose readings are measured by a single use sensor inserted
under your skin. A reusable transmitter sends your data to your display device.
The Dexcom G5 Mobile CGM System provides personalized trend alerts, prompting you to
proactively react when your glucose levels are getting too low, or too high. Dexcom provides
web-based reports reflecting your glucose trends and patterns. Share the reports with your
healthcare professional when developing your diabetes management treatment plans.
Options to View Your Trends
The Dexcom G5 Mobile CGM System transmitter works with a number of display devices
giving you flexibility to use what’s best for you, your situation, or your lifestyle.
1. Dexcom G5 Mobile Receiver
2. Dexcom G5 Mobile App on your smart device
While the system works with different smart devices, they’re not interchangeable during a
sensor session. Before starting one, select which smart device you want to use and stick
with it throughout your session. You can’t use multiple smart devices at the same time, but
you can combine the receiver with a smart device during a session.
The Dexcom G5 Mobile CGM System is the first CGM system where a smart
device acts as a receiver. For a list of current devices and operating systems go to:
dexcom.com/compatibility
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Chapter 5 covers how to set up your smart device with the Dexcom G5 Mobile App.
The primary difference between the receiver and app is not the information they give you,
but how that information is presented. The following are some of the shared CGM data and
system information features.
Tracking Real Time CGM Data
The receiver and app give you the ability to track your glucose trends in a number of different
ways. Each device’s home screen opens to your glucose trend screen.
View Glucose Levels
The receiver and app share many of the same glucose monitoring features. Your glucose
values are color coded to highlight what zone you are in, allowing you, at a glance, to see
what your levels are.
Color coded glucose levels:
• Red - Low
• Grey - Within your normal range
• Yellow - High
Trend Arrows
Glucose levels are not just about the numbers. The Dexcom G5 Mobile CGM System
includes trend arrows so you know the speed and direction of your glucose, allowing you to
proactively react before your glucose gets too high or too low.
Alarm/Alerts
Being warned when your glucose value is too high or too low, falling or rising too quickly, or
if it’s trending towards a severe low or high is very important. Warnings in the form of Alerts
or an Alarm help you avoid getting too low or high. Alarm and Alert notifications help keep
you aware of your glucose trends and are made up of a combination of sounds, vibrations,
and screens.
There are a number of Alerts, but only one Alarm: when your glucose level dips below 55
mg/dL. Some customization options are available and are part of the set up process for the
receiver and smart device.
In Chapter 11, you can learn more about the Alarm and Alerts feature.
Viewing Your Glucose Values
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The Dexcom G5 Mobile CGM System allows you to see your last 1-3-6-12-24 hours of your
sensor glucose readings. On the receiver, from the home screen, press Up/Down Arrows to
view. On a smart device, hold upright in portrait mode, and see the most recent three hours,
turn sideways to landscape to view your glucose levels over the last 1-3-6-12-24 hours.
Go to Chapter 9 to learn more about viewing your glucose trends.
4.4 What’s New to the Dexcom G5 Mobile CGM
System?
Dexcom’s G5 Mobile CGM System has features not found in our previous generations.
These items are new to the Dexcom G5 Mobile App:
• The Dexcom G5 Mobile widget in the Apple Today view
• Dexcom G5 Mobile on Apple Watch
• Share as a feature of the app
The Dexcom G5 Mobile Widget in the Apple Today View
Check your CGM information on your smart device without needing to open the app, even
when the device is locked. Swipe down from the top of your screen to access the Dexcom G5
Mobile widget in the Apple Today view. This is where you might check the weather or stocks
if using the default settings.
For more information about the Dexcom G5 Mobile for Apple Watch, go to Chapter 9.3 under
Additional Ways to View Your App’s CGM Information.
Dexcom G5 Mobile for Apple Watch
Check your CGM information on your wrist! The Dexcom G5 Mobile App supports Apple
Watch* and can be used to discreetly view your glucose reading, trend arrow, and trend
graph.
For more information about Dexcom G5 Mobile for Apple Watch or the Dexcom G5 Mobile
widget in the Apple Today View, go to Chapter 9.3 under Additional Ways to View Your App’s
CGM Information.
*For compatibility information see dexcom.com/compatibility.
Share Your Data
Through secure wireless connections, Dexcom Share allows remote viewing of your sensor
glucose readings, trends, and data by your loved ones from a smart device. Activate Dexcom
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Share by tapping on the app’s Share icon, follow a few simple steps, then invite up to five
people to connect with you.
After downloading the Dexcom Follow™ App, they become your Follower. As a Follower, they
can watch your sensor glucose readings, trends, and receive Alarm/Alerts when your glucose
is low or high.
You determine what your Follower can see. Based on what you allow, your Followers can
receive your Alarm or Alerts, and view your trends. Followers can pick and choose, or turn
off, the data they receive, including the Alarm/Alerts, trends, and messages. The Share
feature in the Dexcom G5 Mobile App is different than the Dexcom Share App used with other
systems.
More information about Dexcom Share and instructions for use, go to Part 5.
NOTE: Review all Dexcom Share System indications, contraindications, warnings,
precautions and detailed procedures in Part 5.
4.5 System Information
The receiver and app also keep you informed on the system’s status. Technical notifications
provide information about your sensor session and about the system’s hardware. Each
chapter provides a table of the prompts, system, and error messages applicable to its
subject. As an example, the calibration chapter will review all calibration messages you
may see.
Now you know what the Dexcom G5 Mobile CGM System does and what’s new, let’s open
your Dexcom G5 Mobile packages, see what’s inside, and review each item.
4.6 System Components
Package
The Dexcom G5 Mobile CGM System comes to you in a number of boxes; after opening keep
the packaging until you are no longer using its contents.
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Sensor
Sensor package
Single use sensor(s)
Insert
Transmitter
Transmitter package
Reusable transmitter
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(Continued from previous page)
Receiver
Receiver package
Receiver
Receiver’s USB charging and download cable
AC power adapter
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Receiver
Getting Started with
Your Dexcom CGM
Dexcom CARE is committed to making your CGM experience a positive one.
We are here to ensure that you experience CGM the way it was designed to
help you manage your diabetes.
Refer to your enclosed Quick Start Guide or Tutorial.
Get Started*
Call us at 877-339-2664 Ext. 4900 and speak with a Certified
Diabetes Educator.
Register for a live, no-charge training webinar at www.dexcom.com or
open an online account to begin “sharing” at www.dexcom.com/register.
Welcome Card
*Learn at your own pace with our Self-Guided Training Tutorial at www.dexcom.com/tutorial or review the disc and Quick Start materials inside your Dexcom G5 Mobile Receiver box; or
receive remote training with Dexcom’s Patient Care Specialist; or schedule an appointment for the Dexcom G5 Mobile device training in your physician’s office or diabetes center.
Expert Advice | Personalized Training | Customized Support | Guidance | Encouragement
LBL013034 Rev 002 MT23142
Quick Start Guide
Training Checklist attached to Quick Start Guide
Training Tutorial USB Card
Overview of System Components
This section is meant as a quick overview of each part, specifics for each are found in
following chapters. For detailed product specifications and technical information, please go
to Chapter 17.
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The Dexcom G5 Mobile CGM System is comprised of four key parts:
1. Single use sensor
2. Reusable transmitter
3. Rechargeable receiver
4. Dexcom G5 Mobile App
a. Downloaded to your smart device
Dexcom G5 Mobile CGM System optional:
Dexcom Share
Sensor Overview
For your safety, the sensor is packaged in a sterile sealed pouch, containing an applicator,
sensor pod, and sensor wire. When you first open the package, your sensor looks like one
item, however it’s actually three: sensor applicator barrel, sensor pod, and sensor wire.
The applicator barrel helps you insert the sensor wire inside the sensor pod under your skin.
After inserting the sensor wire, remove the applicator barrel. The sensor wire stays in the
sensor pod with the pod attached to your skin by adhesive.
The sensor wire is made of silver and platinum with polymer membranes. Once inserted, the
thin and flexible wire measures your glucose levels in the fluid between your cells (interstitial
fluid) for up to seven days.
This section is meant as a quick overview. More information on using and inserting the
applicator, sensor, and sensor wire can be found in Chapter 6.
Plunger
Applicator Barrel
(contains small
introducer needle
and sensor)
Transmitter Latch
Release Tab
Safety Lock
Collar
Sensor Pod
Adhesive Patch
Figure 1. Dexcom G5 Mobile Sensor Applicator and Pod
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Applicator and Sensor Pod
What it’s called
What it does
Applicator
Contains small insertion needle and sensor wire.
Applicator Barrel
Inserts sensor wire under the skin.
Disposable, for single use only.
Removed after insertion.
Keeps all moving parts in place before insertion.
Safety Lock
Prevents accidental sensor insertion.
Tool to remove transmitter after sensor session.
Put in transmitter box after removal to use later.
Collar
Collar removes insertion needle.
Plunger
Inserts sensor wire into your body.
Transmitter Latch
Securely snaps transmitter into sensor pod.
Sensor Pod
Holds transmitter and sensor wire.
Sensor Pod
Water resistant when transmitter is properly installed.
Discarded after sensor session.
Adhesive Patch
Keeps sensor pod attached to your skin.
Transmitter Cradle
Holds transmitter in place during sensor session.
Wire measures glucose levels in fluid in between your cells.
Sensor Wire
Attached to sensor pod.
Discarded with pod after session.
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Transmitter Overview
Figure 2. Dexcom G5 Mobile Transmitter Front and Back
Snapping into the sensor pod, the gray plastic transmitter wirelessly sends your glucose
Snapping into the sensor pod, the gray plastic transmitter wirelessly sends your glucose
information to your display devices—receiver and/or smart device. If you have a new
transmitter, open the package when you are ready to use it.
The transmitter is:
1. Reusable
a. Do not discard after sensor session.
b. Only for you, don’t share transmitter.
2. Water resistant
3. Can transmit data to your display devices for up to 20 feet
a. Range is less if you are in or under water.
4. Battery lasts approximately three months
a. Receiver or smart devices prompts you when battery is running low.
5. Transmitter’s serial number is on the back
More transmitter features and insertion information is in Chapter 6.
Now you are familiar with sensor and transmitter, let’s review the Dexcom G5
Mobile Receiver.
Dexcom G5 Mobile Receiver
The receiver is a small hand-held device. Your receiver, along with your smart device, shows
your sensor glucose readings, trend graphs, trend arrows and alerts you when your glucose
is too high or too low or if there is something you should be aware of or need to do.
The receiver is neither water resistant nor waterproof and can get damaged if moisture
gets inside, so keep it away from any liquids and very high humidity. Keeping the micro
USB port closed helps prevent damaging fluids and dust from getting inside the receiver. If
your receiver does get wet, test it to make sure the speaker and vibrations still work (see
Chapter 12).
If your receiver isn’t charged, see Chapter 14 for charging your receiver’s battery.
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If you want to use the receiver along with a smart device, you need to set them
up separately.
Remember, you can’t use a combination of smart devices during a sensor session; select
just one.
Receiver Overview
What you see
What it’s called
What it does
Receiver
Provides data about your glucose
trends via screen display, sounds
and vibration.
Micro USB Port
Plug USB cable into port for
recharging.
USB Port Door
Close USB port door after removing
USB cable to keep receiver clean
and dry.
Plug into receiver to charge battery.
Micro USB Cable
Don’t plug into a computer port to
charge.
Battery can only be charged using
the adapter/wall charger.
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What you see
What it’s called
What it does
Plug USB cable into adapter/wall
charger.
Wall Charger
Plug wall charger into an electrical
outlet to charge receiver’s battery.
Don’t block access to the charger.
Display Screen
Shows sensor glucose readings,
trend graphs and arrows,
Alarm/Alerts, sensor session status.
Change settings on Menu screen.
Speaker
Allows you to hear your Alarm/Alerts
sounds.
Navigation Wheel
Arrows and button to help you
navigate through the receiver’s menu
options and choose features.
Select Button
Press to select menu option.
Left Arrow
Press to go back to last item/screen
or home screen.
Right Arrow
Press to highlight next item.
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(Continued from previous page
What you see
What it’s called
What it does
Press to scroll up or down to select
menu items or set values.
Up/Down Arrows
Press to scroll back and forth
beyond from the 3 hour trend graph
to the 1-6-12-24 views.
4.7 Smart Device Overview
The Dexcom G5 Mobile App was created to work with your smart device, giving you even
more options in monitoring your glucose trends and patterns. The app is similar to all
other apps.
This User Guide is not meant to show you how to use your smart device. Please contact your
smart device support or read your smart device’s user guide for assistance.
Summary
Now You Can:
• Explain the Dexcom G5 Mobile CGM System
• Describe options to view trends
• Locate your historical readings
• Recognize system components
• Explain each part’s function
Next Steps
Your next step in getting started with the Dexcom G5 Mobile CGM System is selecting how to
continuously receive your sensor glucose readings: Dexcom G5 Mobile App, the Dexcom G5
Mobile Receiver or a combination.
Our next chapter helps you set up both!
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Chapter 5
Let’s G5! The Basics:
Set up Your Display Devices
5.1 Introduction
In the previous chapter, you received a high level overview of the Dexcom G5 Mobile CGM
System and learned you can monitor your glucose levels with different display devices. Now
it’s time to set up your Dexcom G5 Mobile App and your receiver.
After this chapter, you will be able to:
• Create a Dexcom username and password
• Download the Dexcom G5 Mobile App
• Set up the Dexcom G5 Mobile App with the recommended settings
• Successfully set up your Dexcom G5 Mobile Receiver
5.2 Safety Statement
If you’ve used the Dexcom G4 PLATINUM CGM System, you might still have its transmitter or
receiver. While you can use the sensors across the different generations (look for the Dexcom
G5 Mobile/G4 PLATINUM Sensor package), you can’t mix the transmitter or receiver between
the two systems.
PRECAUTION
Don’t: Never mix Dexcom G5 Mobile’s Transmitter or Receiver with Dexcom G4
PLATINUM’s Transmitter or Receiver.
Why: The Dexcom G5 Mobile CGM System’s Transmitter and Receiver are not compatible
with the Dexcom G4 PLATINUM CGM System’s Transmitter and Receiver. The Dexcom G5
Mobile CGM System won’t work if you mix Receiver and Transmitter components from
different generations.
Consequences: Missing a severe low (hypoglycemia) or high (hyperglycemia) event.
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5.3 Why Different Monitoring Methods?
Your convenience!
By offering two separate monitoring systems, the app or receiver, you can choose to monitor
your glucose levels in the handiest method at that moment. Smart device ran out of memory.
If you forgot your receiver at home, use your smart device! Battery died on your smart
device? Smart device memory full? Your receiver has you covered!
With the exception of Dexcom Share, the primary difference between the two monitoring
systems is not the data itself, but how it’s presented.
The next section walks you through the initial set up for the app. To set up the receiver, go
to Section 5.5. If you want to use both the mobile app and the receiver, you need to set each
up individually.
Once you have completed the initial set up, you’re one step closer to beginning your
sensor session!
5.4 Dexcom G5 Mobile App
Before starting your first sensor session, pick the smart device you want to use. As
mentioned in the previous chapter, you can use the receiver with one smart device during a
session; however, you can’t use multiple smart devices during the same session.
While your smart device can have the app installed, part of your initial set up is entering the
transmitter’s serial number (SN). If by accident you enter the SN into more than one smart
device, the system warns you and you won’t be able to complete the set up process.
Suggested Smart Device Settings
Bluetooth is designed wireless communication between devices (unlike Wi-Fi®, which
wirelessly connects devices to the Internet). Your transmitter communicates to your app
via Bluetooth® Smart! Before beginning, make sure your smart device’s Bluetooth is
available and turned on.
Refer to your smart device’s user guide if you have questions on how to change your smart
device settings.
• While checking your Bluetooth settings, check to see Silent and Do Not Disturb
are off. Your app does not override these settings; if you have them on, you will
miss Alarm/Alerts
• After verifying all your settings are correct, there is one more thing to check. Make sure
your smart device’s Volume is loud enough for you to hear any Alarm/Alerts
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• Make sure your smart device settings allow your Dexcom Alarm/Alerts to always show
on your lock screen
• For information on how to set the above settings, see your smart device’s user guide.
Once you have verified your smart device’s settings are right, the next step is installing
the Dexcom G5 Mobile App
• The app needs to be open and running in the background. This may drain your smart
device’s battery; make sure you check its battery is charged
• Don’t change your smart device’s time because it can make the time on the trend
screen wrong and the app may stop displaying data
If your smart device is broken or lost, use receiver until it’s fixed or replaced.
Dexcom G5 Mobile App Installation
Installing the app is easy! Simply download the Dexcom G5 Mobile App from your smart
device’s store. However, if your smart device has been jailbroken, do not install the app.
For information on how to install an app, see your smart device’s user guide. Initial Dexcom G5 Mobile App Setup
Setting up your app is easy! You’ll need your Dexcom account username and password,
along with your transmitter box. Once inside, simply follow the set up wizard instructions.
The set up wizard walks you through safety information, recommended settings, entering
transmitter SN, setting your high/low glucose levels, and receiving CGM notifications.
Your initial set up will require a Dexcom username and password. You can create them by
tapping Sign Up within the app, or by going to dexcom.com.
From Your Web Browser:
1. Go to dexcom.com.
2. Click green Get Started tab or the three green bars, then “Get Started.”
3. Click green Get Started button on the page.
4. Fill out User account screen.
5. Click the green Create New Account button towards the bottom of the screen.
But what if you are unclear about a step?
The Dexcom App has prompts allowing you to get more information. If you are unsure of
something during your initial set up process, look at the screen for additional information
prompt. Informational prompts include, but aren’t limited to: I don’t understand, Learn More,
or Question Mark. Tap your informational prompt to get more information.
To close out of the information prompt, tap the X in the upper right hand corner.
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Initial App Setup
Step
What you see
What you do
Introductory Screens
1
Tap Dexcom G5 Mobile App icon to open app.
2
Swipe through introductory screens or tap Log In.
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Introductory Screens
Enter existing username and password
OR
3
Need a Dexcom username and password?
Tap Sign Up.
Complete Username/Password fields.
Tap Login once.
4
Tap Let’s Get Started.
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Introductory Screens
The next screens are the Terms of Use, safety
warnings, contraindications, and the recommended
settings.
5
Once each screen is read, tap the appropriate
answer to move forward.
Tap Full Safety Statement or, when applicable, I
don’t understand to get more information.
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Setting up Your App Alarm/Alerts and Basic Settings
Set your Low Glucose Alert.
Default is 80 mg/dL.
6
Scroll to select another amount.
Tap Save to move forward.
Once set, you’ll receive an Alert notification if your
glucose dips below your set amount.
Set your High Glucose Alert.
Default is 200 mg/dL.
7
Scroll to select another amount.
Tap Save to move forward.
Once set, you’ll receive an Alert notification if your
glucose rises above your set amount.
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Setting up Your App Alarm/Alerts and Basic Settings
Make sure you get your Alarm/Alerts notifications.
8a
Tap the appropriate response to move forward and
set your notifications.
8b
Tap OK to receive Alarm/Alerts notifications.
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Setting up Your App Alarm/Alerts and Basic Settings
9
The next screens provide suggestions for device
volume, Do Not Disturb, and other basic settings.
Tap appropriate answer to move forward.
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Connecting/Pairing Transmitter With App
10
Tap Next.
Verify Bluetooth is on.
11
The app will check to see if Bluetooth is turned
“on.”
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Connecting/Pairing Transmitter With App
12a
12b
Get your Transmitter box.
Tap Take Photo.
Turn transmitter box upside down on a flat surface
with barcodes facing up.
Center longest barcode within green brackets.
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Connecting/Pairing Transmitter With App
12c
13a
Check mark confirms successful transmitter SN
scan.
If unable to use app’s scanning device:
Tap Enter transmitter SN by hand.
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Connecting/Pairing Transmitter With App
Use keyboard to enter transmitter SN.
13b
Confirm correct SN .
Tap Save.
14
Insert sensor and attach transmitter following
video’s instructions.
See Chapter 6 for more information.
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Connecting/Pairing Transmitter with App
15
Wait up to 30 minutes for smart device and
transmitter to connect.
16
At prompt, Tap Pair to pair app with smart device.
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Connecting/Pairing Transmitter with App
Tap the Sensor warmup circle to start your two
hour sensor warmup.
17
When you see the sensor warmup timer, your initial
set up is complete.
Congratulations!
If you have any issues setting up the Dexcom G5 Mobile App, call Technical Support toll free
at 1.877.339.2664 or toll at 1.858.200.0200. We are here 24/7 to assist you.
If you are having problems with your smart device, contact your smart device’s support line.
After completing your initial app setup, set up the receiver or go to Chapter 6 to start your
initial sensor session.
5.5 Dexcom G5 Mobile Receiver
In the previous chapter, you learned about the receiver’s components. The following is a
refresher to help in your initial set up.
Display Screen:
• Trend screen
• Menu selection screen
Navigation Wheel:
• Select
○○ Button in the middle of the navigation wheel
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▪▪ Center button does not say “Select”
○○ Press to
▪▪ Turn on receiver
▪▪ Select options/features
▪▪ Accept changes
▪▪ Move forward through menus/features
• Up/Down
○○ Scroll through trend screens
○○ Highlight menu items
○○ Change values
• Left
○○ Go back to last item or screen
• Right
○○ Go to next item or screen
Initial Setup of the Dexcom G5 Mobile Receiver
Press Select to turn receiver on.
The first screen you see is the startup screen with ascending green bars. Once complete, a
set up wizard guides you through the initial set ups steps. Don’t be alarmed if your receiver
buzzes or makes other sounds during this process.
After your initial setup is complete, you won’t see the setup wizard again. Your settings can
always be adjusted using menu options.
How you complete your initial set up differs between the receiver and your smart device;
however, the data is the same.
Setup Wizard Prompts:
• Time/Date
• Transmitter Serial Number
○○ Back of transmitter
○○ Back of transmitter’s box
• Setting Low Alert
• Setting High Alert
Before starting a session, you may want to check the receiver’s battery level. If it is less than
half, go to Chapter 4, for charging instructions.
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Initial Receiver Set up
Step
What you see
What you do
Initial Screens
1
Press Select to turn receiver on.
2
Wait.
Time/Date
Press Up/Down Arrow to change year.
Press Right Arrow to move forward.
3a
Press Up/Down Arrow to change month.
Press Right Arrow.
Press Up/Down Arrow to change day.
Press Right Arrow to move to time.
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(Continued from previous page)
Time/Date
Press Up/Down Arrow to change hour.
Press Right Arrow.
Press Up/Down Arrow to change minutes.
3b
Press Right Arrow.
Press Up/Down Arrow to select AM/PM.
Press Select to save and close.
NOTE: After initial set up, if battery is drained,
receiver will vibrate once and you will need to reset
date and time.
Transmitter
4a
4b
4c
Turn transmitter box upside down to locate SN
number.
If transmitter package isn’t available:
• SN is on transmitter’s back
Press Up/Down Arrows to select and enter
transmitter SN.
Press Right Arrow to move to next digit.
Press Select to save and close.
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Setting Low Alert
5a
System default is at 80 mg/dL.
Press Select to save at present levels and close.
To change value:
5b
Press Up/Down Arrows to change value at 5 mg/dL
increments.
Press Select to save and close.
Setting High Alert
6a
System default is at 200 mg/dL.
Press Select to save at present levels and close.
To change value:
6b
Press Up/Down Arrows to change value at 10
mg/dL increments.
Press Select to save and close.
These steps are enough to get you going; now you can start your sensor session!
Summary
Now You Can:
• Create a Dexcom username and password
• Download the Dexcom G5 Mobile App
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• Set app up with the recommended settings
• Successfully set up your Dexcom G5 Mobile Receiver
What’s Next?
Now you have completed setting up your app and/or the receiver, your next step is starting a
sensor session.
No matter what monitoring method you choose, starting a sensor session is the same:
1. Inserting the sensor.
2. Inserting the transmitter.
3. Pairing the transmitter to your device.
4. Two hour sensor warmup.
5. Initial calibrations.
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Chapter 6
Let’s G5! The Basics:
Starting a Sensor Session: Inserting Sensor,
Transmitter, and Starting Your Session
6.1 Overview
Now that your display devices are set up, you’re ready to begin a sensor session. If this is
your first time inserting a sensor, you may want to watch the Dexcom G5 Mobile sensor
insertion video to get a better understanding of the process.
The Dexcom G5 Mobile sensor insertion video is available by three ways:
1. Through the App
2. USB card in your Dexcom G5 Mobile Receiver package
3. Online at dexcom.com:
a. Top of page, click Support Tab.
b. Click Education.
After inserting the sensor, start the sensor warmup on your smart device and receiver.
The sensor warmup takes approximately two hours; during this time your body is getting
used to the new sensor, allowing for more accurate sensor glucose readings. Once the two
hour sensor warmup has passed, you enter two back-to-back fingerstick measurements to
calibrate the sensor’s glucose readings with your fingerstick measurements (Calibration is
covered in the next chapter).
Make sure you give yourself enough time to finish the startup session. Remember your
smart device’s Bluetooth needs to pair with the transmitter, adding up to 30 minutes to
your wait time. Good news is you don’t need to sit around waiting: as long as you have your
display device near, you can go about your day running errands, gardening, personalizing the
Dexcom G5 Mobile settings, whatever you choose during that time frame.
Keep your display device(s) handy during the warmup period—it shows how much time
has passed, notifying you with beeps and an icon when your sensor session is ready for its
initial calibrations.
After this chapter you will be able to:
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• Identify sensor applicator features
• Properly prepare for sensor insertion
• Choose the best location to insert your sensor
• Correctly insert your sensor
• Prepare transmitter for placement
• Correctly attach transmitter to sensor
• Outline what happens during the sensor warmup
• Identify countdown icon
6.2 Safety Statements
Following are some important Precautions and Warnings to review; we want to make sure
you and the system are safe before starting a sensor session.
WARNING
Don’t: If a sensor breaks under the skin with no portion visible above the skin, don’t
remove it.
Do: Seek professional medical help if you have symptoms of infection or inflammation
(e.g., redness, swelling or pain) at the insertion site.
Always report a broken sensor to our Technical Support, 24/7, team at as soon
as possible:
Toll free: 1.877.339.2664
Toll call: 1.858.200.0200
Why: Sensors may fracture on rare occasions.
Testing done in a controlled environment (in-vitro) didn’t find any safety hazards during
an MRI with a broken off sensor under the skin. The wire didn’t heat up nor have any
significant movement during the MRI, images were affected only in the area around the
sensor’s wire.
MRI with broken wire
If you have experienced a broken sensor and are planning to take an MRI, please discuss
the following with your doctor or technician.
Laboratory (in vitro) MRI tests did not detect any safety hazards for a broken sensor that
remains in the body.
There was no significant movement or heating of the wire. Imaging artifacts were limited
to the area around the wire.
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WARNING
Do: Store sensor between 36° F-77° F during its shelf life.
Why: Storing the sensor incorrectly might cause the sensor glucose readings to
be inaccurate.
Never store sensors in the freezer.
Consequences: If stored outside of 36° F-77° F, your sensor glucose readings may not be
accurate, resulting in you missing a severe low or high glucose event.
WARNING
Don’t: Never use the Dexcom G5 Mobile CGM System sensor glucose readings for
treatment decisions.
Do: Only use BG values from your BG meter for treatment decisions (e.g., how much
insulin to take).
Why: Since they measure your glucose from different body fluids, sensor glucose readings
can be different from your meter’s blood glucose values.
Consequences: Using sensor glucose readings for treatment decisions could result in you
missing a severe low or high event.
PRECAUTION
Do: Select sensor insertion site with care.
Avoid:
• Areas likely to be bumped, pushed or squeezed
• Areas of skin with scarring, tattoos, or irritation
• Injecting insulin within 3 inches of sensor
• Placing an insulin pump infusion set within 3 inches of sensor
Why: Inserting sensor in these areas may affect sensor glucose readings.
Consequences: Inaccurate sensor glucose readings may result in you missing a severe
low or high event.
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PRECAUTION
Do: Check sensor package before opening.
Why: Make sure the sterilized package has not been damaged or previously opened. If
opened or damaged, sensor may be unsterile.
Consequences: Using an unsterile sensor may cause an infection.
6.3 Prepping for Sensor Insertion
Before inserting a sensor, make sure you have everything you need. Some items are included
in the Dexcom G5 Mobile CGM System’s packages, others are not.
Items Included in Your Dexcom G5 Mobile Packages
For sensor insertion, you need the sensor and transmitter.
Sensor Applicator
Inside Sensor Box
What you see
What it is
Sterilized sensor pouch with important label information.
Check expiration date.
Single use sensor applicator.
Knowing what each applicator piece does helps you successfully insert your sensor. Chapter
4, Section 4.6 gave you overview of the sensor applicator.
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4. Plunger
3. Safety Lock
5. Applicator Barrel
(contains small
introducer needle
and sensor)
6. Collar
8. Transmitter Latch
7. Sensor Pod
9. Release Tab
2. Adhesive Patch
Figure 3. Dexcom G5 Mobile Sensor Applicator and Pod
The following table reviews the sensor applicator components in order of use.
Order of Use Name
What it does
Sterilized for your protection.
1
Sensor Pouch
2
Adhesive Patch
Holds the sensor/transmitter in place on your
skin.
3
Safety Lock
Prevents plunger from inserting sensor until
you are ready.
4
Plunger
Inserts sensor wire into your body.
5
Applicator Barrel
Contains small insertion needle and sensor
wire.
Open to remove applicator and sensor.
Disposable, for single use only.
Collar removes insertion needle.
6
Collar
Helps remove applicator barrel once sensor
wire is inserted.
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Order of Use Name
What it does
Holds sensor wire in place under skin.
7
Sensor Pod
8
Transmitter Latch
Locks transmitter into sensor pod.
9
Release Tab
Allows you to remove applicator barrel from
sensor pod.
Holds transmitter.
Transmitter
Transmitter Box
What you see
What it is
Bottom of box with important label information.
Keep box until transmitter battery dies.
Reusable transmitter.
In the previous chapter, you entered your transmitter SN into your display devices and made
sure your smart device and/or receiver connected with the transmitter. You won’t be able to
start a sensor session if your transmitter isn’t paired with your receiver and/or smart device.
Not included in packages:
1. Alcohol wipes
2. Your blood glucose meter
3. Your test strips
Before starting, check your blood glucose meter; make sure it’s in good working order
following manufacturer’s directions and the meter’s date and time match your display
device’s date and time.
Make sure test strips haven’t expired and work with your meter.
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Before removing the sensor applicator out of its sterile pouch, determine the best place to
insert your sensor.
6.4 Choosing Your Insertion Site
Choose a place on your belly (or if user is between the ages of 2 and 17, upper buttocks) to
insert the sensor; the site should be either above or below your belt line. The best areas are
usually flat, “pinchable,” and free from where rubbing can occur (along the waist band, seat
belt strap or where you lay when sleeping).
For more help on ideal sensor insertion sites, contact your healthcare professional.
Insertion Sites
Location
Where it is
Front of body (belly area) for ages 2 years and above.
If user is between the ages of 2 years and 17:
Back of body (Upper buttocks)
Do:
• Remove the sensor and applicator from its sterile package only at time of use
• Place at least 3 inches from your insulin pump infusion set or injection site
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• If needed, shave the area so adhesive patch sticks securely
• Make sure area is clean and free of lotions, perfumes, medications
Don’t:
• Never use same site repeatedly for sensor insertion
• Never use same site for 2 sensor sessions in a row
If you have concerns about the sensor pod not sticking, before inserting your sensor, you can
make the sensor site stickier to help ensure the sensor pod does not peel.
Optional Site Preparation
Use optional skin adhesives (Mastisol™, SkinTac™) as part of your insertion site preparation to
help keep your sensor pod attached. Apply the skin adhesive after you selected and cleaned
your insertion site. Use circular motions and create an “O” outline, making sure you don’t get
any skin adhesive inside the outline. Let the “O” dry based on skin adhesive manufacturer’s
instructions. Once dry, your skin may feel slightly sticky.
See Step 3 in the next table for directions.
NOTE: Contact your healthcare professional for specific questions regarding the use of
medical tape, barrier wipes and/or other adhesives as it relates to your use of Dexcom CGM.
6.5 Inserting Your Sensor
You’ve collected all of the needed items to begin a sensor session, viewed the tutorials,
reviewed the sensor applicator and prepped the sensor pod site. You’re now ready to insert
your sensor!
Step
Picture
What you do
Preparation
1
Wash and dry your hands.
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Preparation
2
Clean insertion site with alcohol wipe.
Let dry.
Optional Step: Skin Adhesive
Create an oval on the skin
3
• Do not get any skin adhesive inside the circle
• Let skin adhesive dry
• Insert sensor on clean skin at the center of the
circle
Check pouch: Is it damaged or already opened?
Remove sensor applicator from sterile pouch.
4
Closely inspect sensor, check it hasn’t been
damaged.
Keep sensor packaging until sensor session is
complete.
Attaching Sensor Pod
5
Pull adhesive backing tabs.
Don’t touch sticky adhesive patch.
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Inserting Sensor Wire
Place sensor horizontally, not vertically, on skin.
6
7
8
Move fingers around adhesive patch’s top several
times to secure tape.
Hold applicator barrel.
Pull safety lock out.
Place fingers of one hand on edges of adhesive patch.
Pinch up your skin at the tips of the white adhesive.
Place two fingers directly above collar to steady
applicator barrel.
Place thumb on the white plunger.
9
Push plunger completely down the applicator barrel.
You should hear 2 clicks.
NOTE: Finger placement is important for correct
insertion.
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Removing Applicator Barrel and Collar
Move two fingers from above collar to below collar.
Keeping your thumb as a base on the white plunger.
10
Pull collar all the way back towards your thumb.
You should hear 2 clicks.
NOTE: Finger placement is important for correct
needle removal.
Hold transmitter latch down against your body.
11
12a
Squeeze ribbed release tabs on the sides of sensor
pod.
Move applicator barrel forward and out, away from
your body.
Follow local ordinances when disposing the applicator.
12b
What’s left?
1. Sensor pod
2. Transmitter latch
You have successfully inserted the sensor!
At this point, you should have two items attached:
1. The sensor pod
2. The transmitter latch
Having problems?
If it’s the first time inserting a sensor, you may have questions or need help. If you do, please
contact your Dexcom G5 Mobile CGM System Technical Support team, 24/7, at:
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• Toll free: 1.877.339.2664
• Toll call: 1.858.200.0200
The next step is attaching your transmitter to the sensor pod.
6.6 Attaching Your Transmitter
Now that you have inserted your sensor, you need to attach your transmitter.
Since the transmitter is reusable, you don’t need a new one every time you start a sensor
session. Keep your current session’s transmitter box. The bottom label has important
information you may need after you’ve inserted the transmitter. Once the transmitter has
been attached, you can’t remove it until your session is over. Chapter 8 reviews when and
how to remove your transmitter.
Before inserting your transmitter, check you entered the correct transmitter SN into your
display device. Chapter 5 covers entering transmitter’s SN number.
Step
Picture
What you do
Remove transmitter from box.
Keep box.
1
Save safety latch from sensor applicator (helps
remove transmitter once sensor session is over).
Get alcohol wipe.
Wipe back of transmitter with alcohol wipe.
Let dry for 2-3 minutes.
2
Don’t let the back of transmitter touch your skin.
Don’t scratch transmitter’s back, this can harm the
waterproof seal.
Flat side down.
3
Slide transmitter’s small end under the sensor pod
lip located in front of pod’s ribbed tabs, away from
transmitter latch.
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Step
Picture
What you do
Keep finger on transmitter holding it in place.
4
Push transmitter latch up and forward over the
transmitter’s wide end with your other hand.
You should hear 2 clicks.
Is transmitter secure?
Before removing transmitter latch, verify transmitter is
securely in place.
5
Make sure none of the transmitters sides popped out
of the sensor pod.
If not completely snapped in, you may have a bad
connection and it won’t be water tight.
Hold sensor pod sides with one hand.
Twist latch away from your body with other hand.
6
Remove latch.
Don’t remove transmitter while sensor pod is attached
to skin.
You’re almost done starting your sensor session!
Inserting the sensor, attaching the transmitter, and the two hour sensor warmup are the
same regardless whether you use the receiver or app.
The remaining steps vary from app to receiver:
1. Letting your device know you need to start the sensor warmup.
2. Following your warmup countdown.
6.7 Loose Sensor Pod
The sensor pod should stay on your skin using its own adhesive.
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If the patch peels up, use medical tape (such as Blenderm™, Tegaderm™, Smith & Nephew
IV3000®, 3M™ tape) for extra support.
• Tape over white adhesive patch on all sides for even support
• Don’t tape over the transmitter or any plastic parts of the sensor pod
• Don’t tape under sensor pod
• Don’t leave any substance on the skin where you insert the sensor
Figure 4. The Right Way to Use Tape for Extra Support
6.8 Starting Your Sensor Session
If you choose to use both the receiver and the app, each system requires individual setups
(see Chapter 5).
After pairing the transmitter to your device(s), inserting your sensor, and attaching the
transmitter to the sensor pod, your next step is telling your device(s) you want to start
a sensor session. Transmitters are reusable; pairing is required only when using a
new transmitter.
During the warmup period, neither device will provide any sensor glucose readings. Your
sensor glucose readings begin after the two hour sensor warmup has passed and you
entered the initial two calibration BG values into either the smart device or the receiver.
We’ll first review starting the sensor session for the app.
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Dexcom App: Starting a Session
Step
What you see
1
What you do
Wait for Successful Pairing notification.
Tap green checkmark in black square.
Tap Sensor Warmup circle to start your two hour
sensor warmup.
2
NOTE: You will NOT get any sensor glucose
readings, Alarm/Alerts during your two hour sensor
warmup period.
Wait.
3
Screen provides countdown to sensor warmup. The
orange dashes darken as the countdown moves
forward.
Keep smart device within 20 feet of transmitter
during the sensor warmup period.
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Step
What you see
What you do
Locked screen.
Initial calibration prompt tells you when warmup is
complete.
4
Chapter 7 covers calibrating.
Initial calibration prompt tells you when warmup is
complete.
5
Sensor warmup is complete.
You’re ready to calibrate!
Receiver: Starting a Session
Step
What you see
1
What you do
Press Select to turn on receiver.
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Step
What you see
2
What you do
From Trend Graph.
Press Select to go to Main Menu.
Press Down Arrow to highlight Start Sensor.
3
4
5
Press Select to start new sensor session.
NOTE: After sensor starts, Start Sensor option
disappears.
“Start Sensor” progress bar confirms two hour
sensor warmup.
Keep your receiver within 20 feet during the
warmup period.
Receiver returns to the trend graph screen.
Make sure receiver and transmitter are
communicating.
6
Check receiver 10 minutes after starting for
Bluetooth icon.
• Solid: Connected
• Blinking: Searching for connection
• No Bluetooth Icon: No connection
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Step
What you see
What you do
Wait.
7
8
Screen provides countdown of the two hour sensor
warmup.
Sensor warmup is complete.
You’re ready to calibrate!
6.9 Receiver Bluetooth Tips
Your transmitter and receiver begin communicating once you start a sensor session. After
approximately 30 minutes, if the Bluetooth symbol is solid, and not blinking, your transmitter
and receiver are talking to each other.
• If blinking, Bluetooth is looking for your transmitter
○○ Make sure your transmitter and receiver are within 20 feet of each other
If the Bluetooth icon isn’t on the receiver and the Signal Loss icon appears in the receiver’s
upper right corner of the status bar, they’re not communicating.
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No Communication Between Transmitter and
Receiver
Step
What you see
What you do
Check correct transmitter SN is in receiver.
1
• SN is on the label on bottom of transmitter box
Press Select to go to Main Menu.
2
3
4
Press Down Arrow to Settings.
Press Select.
Press Down Arrow to Transmitter.
Press Select.
Press Select.
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Step
What you see
What you do
Check correct transmitter SN is in receiver.
• SN is on the label on bottom of transmitter box
Compare SN in receiver to SN on transmitter box.
5
If correct, call our 24/7 Technical Support
department, toll free at 1.877.339.2664 or toll at
1.858.200.0200 for help.
Press Select to exit screen.
Press Left Arrow twice to go to Main Menu.
If Wrong SN Entered
6
7
Press Left Arrow twice to go to Main Menu.
If sensor session has started, to correct transmitter
SN, you must stop the sensor session.
Press Down Arrow to Stop Sensor.
Press Select.
8
Press Select to stop session.
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If Wrong SN Entered
9
Wait for sensor session to end.
From Main Menu:
10
Press Down Arrow to Settings.
Press Select.
11
12
Press Down Arrow to Transmitter.
Press Select.
Highlight Transmitter SN.
Press Select.
Enter correct SN using Up/Down Arrow.
13
Press Up/Down Arrow to select and enter transmitter
SN.
Press Right Arrow to move to next digit.
Press Select to save and close.
Press Left Arrow twice to return to Main Menu.
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If Wrong SN Entered
Start Sensor Session.
14
Press Up/Down Arrow to highlight Start Sensor.
Press Select on Start Sensor.
6.10 Sensor Session Warmup
The sensor takes about two hours to adjust to your body. While you are in the sensor warmup
period, you can customize your settings. Chapter 12, steps you through how to personalize
your Dexcom G5 Mobile CGM System’s display devices.
Once the sensor warmup is complete, you’re ready to enter your initial calibrations! The next
chapter shows you how.
Summary
Now You Can:
• Identify sensor applicator features
• Properly prepare for sensor insertion
• Choose the best location to insert your sensor
• Correctly insert your sensor
• Prepare transmitter for placement
• Properly attach transmitter to sensor
• Outline sensor warmup
• Identify countdown icon
What’s Next?
The next chapter guides you through the calibration steps.
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Chapter 7
Let’s G5! The Basics:
Calibration
7.1 Introduction
In the previous chapter, you learned how to insert your sensor, transmitter, and start a new
sensor session. You’re now ready to begin your last step before getting your sensor glucose
readings: Calibration.
This chapter reviews not just your initial calibration, but also update calibrations required
throughout your sensor session. After this chapter, you will be able to:
• Calibration Overview
○○ Define calibration
○○ Explain the importance of calibration
○○ Identify steps to ensure a successful calibration
• Recognize steps in taking accurate blood glucose measurement
○○ Identify the correct blood glucose site for calibrations
○○ Prepare finger for fingerstick measurement
• Determine if you should/should not calibrate
○○ Recognize when you can enter fingerstick measurement for calibration
○○ Recognize when you shouldn’t enter the fingerstick measurement for calibration
○○ Determine if you need to calibrate outside of the normal calibration requirements
• Initiate startup calibration
• Perform update calibrations
• Correctly enter your fingerstick measurement
○○ Dexcom G5 Mobile App
○○ Dexcom G5 Mobile Receiver
• Identify calibration errors
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7.2 Calibration Overview
What Is a Calibration?
As you learned earlier, the sensor glucose readings come from measuring the glucose fluids
found between your cells (interstitial fluids). Although blood and interstitial fluids are similar,
sensor glucose readings can be different between your fingerstick and your CGM. Calibration
provides a comparison, or measurement, between your meter’s fingerstick measurement and
the sensor’s glucose readings, allowing alignment between the sensor and meter.
Your BG meter ‘teaches’ the sensor your glucose values through calibration. Just like a clock
can need adjusting – calibrations allow your CGM to adjust to your body.
Why Is Calibrating Important?
Calibrations are a must to make sure the CGM system is performing at its best.
By calibrating when the system notifies you that a calibration is due, the Dexcom G5 Mobile
CGM System uses your meter’s BG value to make sure the sensor glucose readings remain
accurate throughout your session.
How Do I Calibrate?
Take a fingerstick measurement from your meter, and simply enter the meter’s BG value
into your display device. This chapter lets you know what precautions you need to take
before taking your BG meter value, then entering your data. Up to now, you needed to enter
information such as Alerts, transmitter SN, etc., separately for the receiver and smart device.
Calibration is different.
Don’t enter your BG values in both devices, enter into either your app or the receiver. If you
enter your meter’s BG value into your receiver, it takes about five minutes for your sensor
glucose readings to begin. In approximately ten minutes, you can view the readings in the
other display device.
How Often Do I Calibrate?
There are three primary “must do” calibration events, each with its own prompts:
1. Two initial calibrations once your warmup session is complete.
2. Update calibrations done twice daily, once every 12 hours.
3. When you’re prompted.
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If you receive a calibration prompt outside of your scheduled calibration schedule, the system
doesn’t accept your most recent calibration or your meter’s BG value is very different from
the sensor’s glucose reading.
Don’t worry about keeping track of the time between calibrations, the system will prompt you
when you are ready for another.
Now you have an overview of calibration, let’s review some contraindications, warnings, and
precautions you need to know and follow before you calibrate.
7.3 Safety Statements
CONTRAINDICATION
Don’t: Never take any medications containing acetaminophen during your sensor session.
Why: Taking medications with acetaminophen (such as Tylenol or Excedrin Extra Strength)
while wearing sensor may falsely raise sensor glucose readings. Level of inaccuracy
depends on:
1. Amount of acetaminophen active in your body.
2. May be different for each person.
Consequences: Without correct readings you might miss a severe low event.
WARNING
Don’t: Never use the Dexcom G5 Mobile CGM System sensor glucose readings for
treatment decisions.
Do: Only use BG values from your BG meter for treatment decisions (e.g., how much
insulin to take).
Why: Since they measure your glucose from different body fluids, sensor glucose readings
can be different from your meter’s blood glucose values.
Consequences: Using sensor glucose readings for treatment decisions could result in you
missing a severe low or high event.
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WARNING
Do: Calibrate at least once every 12 hours.
Why: Calibrating less often than every 12 hours might cause inaccurate sensor
glucose readings.
Consequences: Missing severe low (hypoglycemia ) or high (hyperglycemia) Alarm
or Alerts.
PRECAUTION
Do: Look at trend arrows before calibrating. Trend arrows help you determine if you can
calibrate now or should wait.
Don’t: Never calibrate if your blood glucose is changing at a significant rate, typically more
than 2 mg/dL per minute.
Never calibrate when you see:
• A single arrow, pointing up
○○ Rising 2-3 mg/dL each minute
• Two Arrows pointing up
○○ Rising more than 3 mg/dL each minute
• Single arrow pointing down
○○ Falling 2-3 mg/dL each minute
• Two arrows pointing down
○○ Falling more than 3 mg/dL each minute
Why: Calibrating during significant rise/fall of blood glucose may affect accuracy of sensor
glucose readings.
Consequences: You may miss a severe low or high glucose event.
PRECAUTION
Do: Enter the exact BG value displayed on your BG meter within five minutes of a carefully
performed fingerstick measurement.
Why: Entering the wrong blood glucose values, or waiting more than five minutes before
entry, might affect sensor accuracy.
Consequences: You may miss a severe low or high glucose events.
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PRECAUTION
Do: Only use fingerstick measurements from your BG meter for calibration.
Don’t: Never use alternative site blood glucose values such as blood from palms,
forearms, etc.
Why: Alternative site BG values are different from a fingerstick blood glucose value and
may not reflect most recent blood glucose value.
Consequences: You may miss a severe low or high glucose event.
7.4 When to Calibrate
Calibrating on a regular schedule aligns your sensor glucose readings with your meter’s BG
values. Without calibrations, your sensor may be inaccurate, and as a result, so will your
display device’s sensor glucose readings, Alerts, and prompts, etc.
There are important times when you must calibrate:
1. Initial or Start-Up Calibration: two hours after you insert your sensor.
2. 12 Hour Update: every 12 hours after two hour startup calibration.
3. When system prompts you.
With calibration prompts, your sensor and display device helps you keep your calibration
schedule on track. If your BG values are not between 40-400 mg/dL, the system won’t
accept your calibration. Wait until you are within the 40-400 mg/dL range before entering
your BG values.
Initial Calibration: Sensor Start-Up Completed
1. At prompts (see next table) enter two back-to-back fingerstick measurements into just
one device.
2. No need to do initial calibrations twice.
a. Calibration data flows between the receiver and your app.
b. Five minute reporting delay between devices.
3. First update calibration is 12 hours after your initial calibration.
Update Calibration
Update calibrations are typically 12 hours since your last calibration, however it can be
sooner. As an example, if you know your next calibration is due at 4 AM, you can do the
calibration before bedtime, resetting the 12hour count down.
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1. Enter one fingerstick measurement at least every 12 hours.
2. Display devices provides calibration prompts.
3. You may be prompted to enter additional fingerstick measurements as needed.
Figure 5. Example Minimum Calibration Schedule During
Seven-Day Sensor Session
7.5 Calibration Prompts
Sensor Session Start-Up Calibration Prompts
Once your two hour sensor start-up is complete, your display device tells you it’s time to
enter the first of your two back-to-back start-up calibrations. Once the system has accepted
your BG values, your glucose readings begin. If you don’t enter your BG values right away, the
system reminds you every 15 minutes. Remember, only use your BG meter for calibrations,
and never enter values from your CGM.
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Start-Up Calibration Prompts
Device
What you see
What it means
What you do
First Calibration
Smart Device:
Lock Screen
Smart Device:
In App
Sensor warmup is
complete.
Ready for first
of two initial
calibrations.
Follow steps in
Section 7.6 and 7.7.
Immediately prepare
for next calibration.
Receiver
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(Continued from previous page)
Device
What you see
What it means
What you do
Sensor accepted
first calibration.
Follow steps in
Section 7.6 and 7.7.
Ready for second
BG meter value.
Next calibration in
12 hours.
Second Calibration
Smart Device:
Lock Screen
Smart Device:
In App
Receiver
Your sensor glucose readings begin in approximately five minutes once the device(s) accepts
your calibrations.
Update Calibration Prompts
Once your start-up calibration is done, your update calibration schedule begins.
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The steps to enter your update calibrations are the same as your initial calibration, including
only entering values in one display device. The only difference is, with update calibrations,
enter your BG meter value just once.
Like the reminders you received with your initial calibration, if you don’t enter your BG meter
values right away, the system prompts you every 15 minutes.
Update Calibration Prompts
Device
What you see
Smart Device:
Lock Screen
Smart Device:
In App
Receiver
What it means
What you do
Enter update
calibration.
If prompt doesn’t go
away:
• System
didn’t accept
calibration
• BG values are
very different
from sensor
glucose
readings
Follow steps in
Section 7.6 and 7.7.
Immediately prepare
for next calibration.
Tap message to clear prompt on your smart device and to clear a prompt on your receiver,
press Select.
Sound/Vibration Prompts
In case you can’t look at your screen, both the smart device and receiver provide, with the
exception of your regular 12 hour update calibration, beep/vibration prompts to let you know
it’s time to calibrate or if there was a system calibration error.
For more information on setting your sound/vibration prompts and how to clear them, please
see Chapter 9.
Smart Device
Calibration prompts will alert you with a triple beep if your smart device is not on Silent or Do
Not Disturb.
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Receiver
The receiver alerts you with an initial vibration for calibration prompts. If not cleared, you
receive a vibrate/beep every five minutes until confirmed.
7.6 Preparing for Calibration
Your sensor depends on you to help make its sensor glucose readings accurate. If you don’t
prepare properly for the calibration, your sensor may not provide you with the most accurate
sensor glucose readings.
Eight Steps to Successful Calibration:
Do:
1. Wash and dry your hands before staking a fingerstick measurement.
2. Always use the same meter you routinely use to measure your blood glucose.
a. Blood glucose meter and strip accuracy vary between meter brands.
b. Switching within a session might cause sensor glucose readings to be
less accurate.
3. Follow meter’s instructions exactly when taking your fingerstick measurement.
4. Verify test strips are current and, if required, coded correctly with meter.
5. Check: Is Bluetooth is active?
6. Use fingerstick BG values only.
a. Other sites are not as accurate.
b. Must enter within five minutes of taking BG meter value.
c. Enter exact BG value from your meter for each calibration.
Don’t:
7. Don’t take acetaminophen containing medication during your session (e.g., Tylenol).
a. See your healthcare professional to better understand how long acetaminophen
is active in your body.
8. Don’t calibrate if your BG values are under 40 mg/dL or over 400 mg/dL.
a. If BG value is outside of this range, receiver doesn’t understand these values and
won’t calibrate.
i. You must wait until your blood glucose is in the range to calibrate.
Be safe—if blood glucose is low, first treat low blood sugar, and then calibrate.
7.7 Ready? Set? Calibrate!
You’ve followed the eight steps above, have a valid BG value from your meter, and your
display device keeps alerting you: Calibrate! Calibrate! Calibrate!
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Remember:
You don’t have to take a fingerstick measurement for each display device when calibrating,
once you enter the reading into one, data is pushed to the other within five minutes.
Next are steps to enter your calibrations using the app, followed by the steps for entering
your calibrations into the receiver.
Calibrate With Your Dexcom G5 Mobile App
Step
What you see
1
What you do
Tap circle.
Additional info
Initial calibration: Enter
two back-to-back meter
BG value.
Update calibration:
Enter one meter BG
value.
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(Continued from previous page)
Step
What you see
2
What you do
Enter meter’s BG value
using number pad.
Tap Save.
Additional Info
Double check your
numbers.
Entering wrong values
can affect the sensor’s
accuracy.
Verify value is correct.
Tap Save.
3
If not correct:
Tap Cancel.
Reenter correct value.
(Continued on next page)
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(Continued from previous page)
Step
What you see
4
5
What you do
Additional Info
Tap circle to enter your
second BG value.
Follow steps 2-3 and
enter second reading.
Meter icon has no
calibration prompt.
Calibration accepted.
Your calibration was
successful.
(Continued on next page)
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(Continued from previous page)
Step
What you see
What you do
Wait for next calibration
prompt in 12 hours.
6
Additional Info
Default Home Trend
screen.
Calibration accepted.
Calibrate With Your Dexcom G5 Mobile Receiver
Step
What you see
1
What you do
Press Select to turn on
receiver.
Press Select again for
Main Menu.
Additional Info
You won’t see calibration
prompts when receiver
screen is black.
(Continued on next page)
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(Continued from previous page)
Step
What you see
What you do
Additional Info
Press Up/Down Arrow.
2
Highlight Enter BG.
Press Select.
Press Up/Down Arrow
to change numbers.
3
Stop at meter’s BG
value.
Press Select.
4a
Verify BG value is
correct.
If correct:
Press Select.
Verify BG value is
correct.
4b
If incorrect:
Press Right Arrow to
Cancel.
Press Select.
Reenter BG value.
Sensor default reading is
120 mg/dL.
If sensor glucose
reading is within the last
15 minutes, screen will
show sensor’s actual
reading.
If Select is not pressed:
• Receiver times out
• BG level isn’t
recorded
Cancel and re-enter BG
value.
Fingerstick
measurement must
be within five minute
window.
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(Continued from previous page)
Step
What you see
What you do
5
Wait.
6
Immediately take
another meter reading.
Enter meter’s BG Value.
7
Wait for next calibration
prompt in 12 hours.
Additional Info
“Thinking” screen.
BG value is accepted.
First calibration
accepted.
Time for second
calibration.
Default Trend screen.
Calibration(s) accepted.
7.8 Calibration Errors
Before or during your calibration process, your display device may show error prompts. If the
prompts don’t go away after 15 minutes, refer to Chapter 18, Troubleshooting.
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Device
What you see
What it means
Smart Device:
In App
Wait 10-15 minutes.
Sensor can’t
calibrate now.
Retake fingerstick
measurement at
prompt.
Enter BG value.
Receiver
Smart Device:
In App
System didn’t
accept recent
calibration.
Receiver
What you do
Additional
calibration needed
immediately.
Calibrate.
No sensor glucose
readings.
Approximately five minutes after entering your second BG meter value, your display device(s)
will start providing sensor glucose readings and glucose level trends. While each display
device may have different ways of presenting sensor glucose readings and trends, the
meanings are the same.
Fingerstick measurements entered into one device will be available in the other
approximately ten minutes after entering data.
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Summary
Now You Can:
• Calibration Overview
○○ Define calibration
○○ Explain the importance of calibration
○○ Identify steps to ensure a successful calibration
• Recognize the steps required to take an accurate blood glucose levels
○○ Identify the best blood glucose site for calibrations
○○ Prepare finger for fingerstick measurement
• Determine if you should/should not calibrate
○○ Recognize when you can enter BG meter values
○○ Recognize when should not enter the BG meter values
○○ Determine if you need to calibrate outside of the normal calibration guides
• Initiate startup calibration
• Perform maintenance calibrations
• Correctly enter your fingerstick measurement
○○ Dexcom G5 Mobile App
○○ Dexcom G5 Mobile Receiver
• Identify calibration errors
What’s Next?
In the next chapter, you’ll learn how to end a typical seven day sensor session, what to
do if you need to end your sensor session early, along with removing the transmitter and
determining if you need to replace it.
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Chapter 8
Let’s G5! The Basics:
Ending Your Sensor Session and Transmitter
Session
8.1 Introduction
Dexcom G5 Mobile Sensor Sessions last seven days. This chapter reviews what you should
expect when your session is about to expire, removing the sensor and transmitter. It also
covers how to determine if you need to end your session early.
After this chapter, you will be able to:
• Identify replace sensor prompts at the end of a seven day sensor session
• Recognize when you have to end a sensor session early
• Successfully end a sensor session early
○○ Identify how you can prevent sensor session failures
• Remove your sensor pod with transmitter attached
• Separate transmitter from sensor pod
• Determine if transmitter can be used for another sensor session
To keep up with your glucose trends, it’s important to begin a new sensor session as quickly
as possible. After a sensor session ends, the sensor stops taking your sensor glucose
readings. You won’t get your trends, nor will you get any Alarm or Alerts.
Before stopping a session, and removing the sensor pod and transmitter, review the following
safety statements to make sure you don’t harm yourself.
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8.2 Safety Statements
WARNING
Don’t: If a sensor breaks under the skin with no portion visible above the skin, don’t
remove it. Don’t ignore sensor fractures.
Do: Seek professional medical help if you have symptoms of infection or inflammation
(e.g., redness, swelling or pain) at the insertion site.
Always report a broken sensor to our Technical Support, 24/7, team as soon as possible:
Toll free: 1.877.339.2664
Toll call: 1.858.200.0200
Why: Sensors may fracture on rare occasions.
Testing done in a controlled environment (in-vitro) didn’t find any safety hazards during
an MRI with a broken off sensor under the skin. The wire didn’t heat up nor have any
significant movement during the MRI, images were affected only in the area around the
sensor’s wire.
MRI with broken wire
If you have experienced a broken sensor and are planning to take an MRI, please discuss
the following with your doctor or technician.
Laboratory (in vitro) MRI tests did not detect any safety hazards for a broken sensor that
remains in the body.
There was no significant movement or heating of the wire. Imaging artifacts were limited
to the area around the wire.
PRECAUTION
Do: Keep Transmitter until it’s battery life has ended.
Why: Transmitter is reusable.
• Use for multiple sessions
8.3 Ending Your Sensor Session
There are different ways your session might end.
The most common is your sensor’s typical seven day timeframe ended. The second is
ending the sensor session early. You may end a session early based on a personal decision,
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or on rare occasions, the receiver or app detects sensor issues and prompts you to end
the session.
Let’s review ending a normal session first, later in this chapter we’ll review the prompts for
ending the session early.
Ending Your Seven Day Sensor Session
Just like other prompts, your sensor session ending prompts need clearing:
• App
○○ Tap screen
• Receiver
○○ Press Select
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End of Seven Day Sensor Session Prompts
Ending Sensor Session Prompts
Device
What you see
What it means
At Six Hours
Smart Device:
Lock Screen
Prompts begin when sensor session has
only six hours left.
Smart Device:
In App
Clock will countdown until session has
ended.
Continue to get sensor glucose readings.
Receiver
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(Continued from previous page)
Device
What you see
What it means
At Two Hours
Smart Device:
Lock Screen
Two hours remain on your current sensor
session.
Smart Device:
In App
Continue to get sensor glucose readings.
Receiver
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(Continued from previous page)
Device
What you see
What it means
At Thirty Minutes
Smart Device:
Lock Screen
Thirty minutes remain.
Smart Device:
In App
Continue to get sensor glucose readings.
Receiver
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(Continued from previous page)
Device
What you see
What it means
Session Ended
Smart Device:
Lock Screen
Session has ended.
App
Tap screen’s “?” for steps to:
Smart Device:
In App
• Remove sensor
• Insert new sensor
Receiver
Press Select to clear.
Receiver
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(Continued from previous page)
Device
What you see
What it means
Session Stopped
Smart Device:
Lock Screen
N/A
Sensor session has stopped.
Smart Device:
In App
App
• No sensor glucose readings
• Prompts for new session
Receiver
Receiver
• Straight line
○○ No sensor glucose readings
Sound/Vibration Prompts
In case you can’t look at your screen, both the smart device and receiver provide
beep/vibration prompts to remind you your sensor session will end in 30 minutes, it has just
ended, or if your sensor failed and you need to start a new session. Remember, if your smart
device is on Silent or Do Not Disturb, you won’t get any sound prompts.
For more information on setting your sound/vibration prompts, please see Chapter 9.
Smart Device
Your smart device prompts you with a triple beep. If not cleared, you receive the triple beep
twice, five minutes apart.
Receiver
The receiver alerts you with an initial vibration prompts. If not cleared, you receive a
vibrate/beep twice, five minutes apart.
Once a sensor session has expired, you are ready to start your new session! If you’re not
sure what to do, the app will provide instructions, or you can refer to the Quick Start Guide,
online tutorials, or go to Chapter 6 in the User Guide.
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Ending Your Sensor Session Early
For personal reasons, you may want to force quit a sensor session early (e.g., you’re getting
an MRI and need to remove sensor pod).
Or, occasionally, the app or receiver may detect something is wrong with your sensor and let
you know it’s stopping the current session.
This may be caused by a number of reasons:
1. Unresolved calibration issues.
2. Error symbol does not go away.
3. Wait symbol does not go away.
4. Sensor is coming out of the body (for example, the adhesive is peeling off).
You’ll receive error prompts leading to a new sensor session. If you see error prompts,
always contact Technical Support before stopping a sensor session early.
Technical Support, 24/7, at:
Toll free: 1.877.339.2664
Toll call: 1.858.200.0200
When your display device has system errors, you may not receive any sensor glucose
readings and you should not calibrate.
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Prompts to End Sensor Session Early
System Prompts
Device
What you see
What it means
Smart Device:
Lock Screen
Sensor issues detected.
Smart Device:
In App
Session ends automatically.
No:
• Sensor Glucose Readings
• Alarm/Alerts
Replace sensor.
Receiver
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(Continued from previous page)
Device
What you see
What it means
Smart Device:
Lock Screen
Wait up to three hours while the system
autocorrects.
Smart Device:
In App
Check transmitter—is it properly inserted
into sensor pod?
Make sure you haven’t taken
acetaminophen.
If not corrected after 3 hours:
Receiver
• Contact Dexcom Technical Support
Smart Device:
Lock Screen
Wait up to three hours while the system
autocorrects.
Smart Device:
In App
Check transmitter—is it properly inserted
into sensor pod?
Make sure you haven’t taken
acetaminophen.
If not corrected after 3 hours:
Receiver
• Contact Dexcom Technical Support
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The Dexcom G5 Mobile CGM System knows when a typical seven day sensor session is over,
automatically ending the session in each display device. However, if you need to end the
session early, you need to let the system know by manually stopping the sensor session.
While the end result is the same (ending a sensor session), the steps differ between the
app and receiver. If you’re using both, no need to stop the sensor session in each: the other
display will see the session has stopped.
Let’s first look at how to end a sensor session in the app, then the receiver.
App: Ending a Sensor Session Early
Step
What you see
1
What it means
What you do
Access Main Menu.
Tap Main Menu icon.
Ends sensor session.
During session:
1
• Stop Sensor option
appears
Tap Stop Sensor.
Not in active session:
• Start Sensor option
appears
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(Continued from previous page)
Step
What you see
3
What it means
What you do
Blue “?” icons provide
additional information.
Tap Stop Sensor.
Confirms sensor session
has ended.
4
Ready for new session.
Remove sensor.
Insert new sensor.
Tap green circle when
ready for new session.
Receiver: Ending a Sensor Session Early
Step
What you see
1
What it means
What you do
Go to Main Menu.
Press Select.
(Continued on next page)
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(Continued from previous page)
Step
What you see
2
What it means
What you do
Ends sensor session.
Press Down Arrow to
Stop Sensor.
During session, Stop
Sensor option appears.
Press Select.
3
Thinking screen.
Wait.
4
Confirms you want to
stop sensor.
Press Select.
Return to Main Menu.
5
Ready to start a new
session.
Remove sensor.
Not in active session,
Start Sensor option
appears.
Press Start Sensor
when ready for new
session.
Insert new sensor.
Temporary Shutdown Receiver
To save on its battery, you can temporarily shut down the receiver. When shut down, your
receiver and transmitter no longer communicate and you will not get any Alarm or Alerts
although your sensor session remains active.
Shutting down the receiver does not extend your sensor session past the seven days; it only
stops the receiver from communicating with the transmitter. Your sensor session will stop
seven days after you started the session.
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Step
What you see
What it means
What you do
1
Go to Main Menu.
Press Select.
2
Shutdown confirmation
screen appears.
3
Confirms you want to
shut down.
Press Down Arrow to
Shutdown.
Press Select.
Press Select.
Shuts down receiver.
Press Select to turn the receiver back on. It may take up to 20 seconds for the receiver to
turn on.
Preventing Sensor Failures
Sensor failures can happen when your display device doesn’t receive your sensor’s glucose
readings. While it is rare to have a sensor failure, there are preventative steps you can take.
Help prevent sensor failures by checking:
1. Sensor hasn’t expired.
2. Transmitter is snapped securely in sensor pod.
3. Sensor pod isn’t dislodged or adhesive isn’t peeling.
4. Nothing is rubbing against sensor pod (e.g., seat belts, etc.).
5. You selected a good insertion site (see Chapter 6).
6. Insertion site is clean and dry before sensor insertion.
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The app and receiver are ready for a new session! However before you can start a new
sensor session, you need to end the current sensor session, and remove the old sensor
and transmitter.
8.4 Remove Sensor Pod and Transmitter
Remove Sensor Pod
Think of the transmitter as being part of the sensor pod. Do not remove the transmitter
before removing the sensor pod from your body.
To remove the sensor pod:
1. Gently peel sensor pod adhesive patch from skin.
a. Sensor wire comes out with sensor pod.
2. Separate the transmitter from the sensor pod.
3. Discard the sensor pod following your local waste management regulations for
disposing blood contacting parts (sensor and applicator).
Remove Transmitter from Sensor Pod
Remember your transmitter is reusable. With a battery life of 90 days, use the same
transmitter over a number of sensor sessions. You’ll receive prompts as you near the end of
its battery life.
Before reusing the transmitter in your new sensor session, separate it from the old
sensor pod.
You can detach transmitter two ways:
1. Use safety lock (see With Safety Lock table). You removed this from the applicator
barrel at the beginning of the session.
2. Manually spread out tabs holding transmitter in sensor pod (see Without Safety
Lock table).
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With Safety Lock
Step
Picture
What you do
Grasp end of adhesive patch.
1
Peel adhesive patch up and away from your body to
remove sensor pod and transmitter.
2
Put sensor pod on flat surface.
Place safety latch’s jagged edge:
3
4
• Over transmitters wide edge
• In between open slots on sensor pods sides
Lift up safety latch.
If you no longer have the safety lock, don’t worry! You can use your fingers to remove the
transmitter from the old sensor pod.
After removing your sensor, and taking the transmitter out of the sensor pod, you’re ready
to begin a new sensor session. The transmitter’s battery is good up to three months. If you
haven’t received your final seven day transmitter battery life warning, you can reuse the
transmitter for your next session.
Remember:
1. Never use same spot repeatedly for sensor insertion.
2. Never use same site for 2 sensor sessions in a row.
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Without Safety Lock
Step
Picture
What you do
Grasp end of adhesive patch.
1
Peel adhesive patch up and away from your body to
remove sensor pod and transmitter.
2
Put sensor pod on flat surface.
3
Grasp sensor pod’s wide end with two hands and
place fingers in side’s open slots.
4
Pull tabs away from transmitter.
8.5 End of Transmitter Battery
How do you know if your transmitter’s battery will last through your next session?
System messages help you determine if your transmitter’s battery will last through your
next seven day session. Starting at three weeks to the end of its battery life, the messages
countdown the transmitter’s battery until it has only seven days. If the transmitter battery
has seven days or less remaining, you won’t be able to start a new session.
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Transmitter Battery Messages
Device
What you see
What it means
Smart Device:
Lock Screen
Smart Device:
In App
Battery will expire in three weeks.
Order a new transmitter.
Receiver
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(Continued from previous page)
Device
What you see
What it means
Smart Device:
Lock Screen
Smart Device:
In App
Battery will expire in two weeks.
Order a new transmitter.
Receiver
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(Continued from previous page)
Device
What you see
What it means
Smart Device:
Lock Screen
Smart Device:
In App
Battery will expire in one week.
Order a new transmitter.
Receiver
To make sure you have a transmitter that’s ready for a new sensor session, you may want to
reorder a new one at store.dexcom.com, by calling Customer Service (see Section 16.1), or
through the channels you used before, at your first low battery prompt.
Sound/Vibration Prompts
In case you can’t look at your screen, both the smart device and receiver provide
beep/vibration prompts to tell you your transmitters battery is low or the transmitter failed.
Remember, if your smart device is turned on to Silent or Do Not Disturb, you won’t get any
sound prompts.
For more information on setting your sound/vibration prompts and how to clear them, please
see Chapter 9.
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Smart Device
Your smart device prompts you with a triple beep. If not cleared, you receive the triple beep
twice, five minutes apart.
Receiver
The receiver alerts you with an initial vibration prompts. If not cleared, you receive a
vibrate/beep twice, five minutes apart.
Summary
Now You Can!
• Identify replace sensor prompts at the end of a seven day sensor session
• Recognize when you have to end a sensor session early
• Successfully end a sensor session early
○○ Identify how you can prevent sensor session failures
• Remove your sensor pod with transmitter attached
• Separate transmitter from sensor pod
• Determine if transmitter can be used for another sensor session
What’s Next?
Congratulations, you have the basics down!
You can set up your app and receiver, start a sensor session, calibrate, along with ending
your sensor session and when to replace your transmitter. But the Dexcom G5 Mobile CGM
System can do much more.
In the next part, Part 3: Next Steps, you will learn how to get the most out of your Dexcom G5
Mobile CGM System.
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NEXT STEPS - GETTING THE MOST
OUT OF YOUR DEXCOM CGM
•
Reading Trend Graph Screens and Recognizing Trends
•Events
•
Alarm and Alerts
•
Sounds for Alarm, Alerts and System Messages
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Chapter 9
Next Steps:
Home Screen, Rate of Change Arrows, and
Errors
9.1 Introduction to Home Screens
In the previous chapter, you learned about calibrations: why they are important and how
to do complete them. Within five minutes of your final calibration your sensor glucose
readings begin!
In this chapter, you’ll learn three things. First, reading the home screen, second, identifying
your sensor glucose readings and trends: What do they mean? What’s the best way to use
trend information? And third, what you do if you aren’t getting your sensor glucose readings.
The purpose of this chapter isn’t to tell you how to react to your trends, but to help you
recognize where your glucose was and where it’s going. Your healthcare professional can
help you with your questions on what actions to take based on your glucose trends.
After this chapter, you’ll be able to:
• Recognize home screen icons
• Locate sensor glucose reading
• Explain sensor glucose target range
• Recognize the importance of gray, yellow, and red colors
• Identify low/high glucose alert levels on your trend graph
• Describe when you receive a High or Low sensor glucose reading
• Change trend graph views
• Cite differences between rate of change arrows
• Recognize error messages
9.2 Safety Statements
Take a moment and read the safety statements. If not followed, your sensor glucose
readings and trends may be less accurate, plus and you may miss important high or low
glucose alerts.
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CONTRAINDICATION
Don’t: Never take any medications containing acetaminophen during your sensor session.
Why: Taking medications with acetaminophen (such as Tylenol or Excedrin Extra Strength)
while wearing sensor may falsely raise sensor glucose readings. Level of inaccuracy
depends on:
1. Amount of acetaminophen active in your body.
2. May be different for each person.
Consequences: Without correct readings you might miss a severe low event.
WARNING
Don’t: Never use the Dexcom G5 Mobile CGM System sensor glucose readings for
treatment decisions.
Do: Only use BG values from your BG meter for treatment decisions (e.g., how much
insulin to take).
Why: Since they measure your glucose from different body fluids, sensor glucose readings
can be different from your meter’s blood glucose values.
Consequences: Using sensor glucose readings for treatment decisions could result in you
missing a severe low or high event.
WARNING
Don’t: Never ignore symptoms of high and low glucose.
Do: Measure your blood glucose with fingerstick measurement if sensor glucose readings
don’t match your symptoms.
Why: Your sensor glucose readings may not be accurately reading your glucose.
Consequences: Using sensor glucose readings for treatment decisions could result
having severe low (hypoglycemia) or high (hyperglycemia) events.
9.3 Overview of Home Screen
Regardless of your display device, the home screen shows your current sensor glucose value,
glucose trend, rate of change arrow and CGM system status. While the screen does look
different between the receiver and smart devices, their information and color coding are
the same.
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No matter how you hold it the receiver’s view does not change; the Dexcom G5 Mobile App
has two ways to view data based on how you hold your smart device:
1. Vertically in portrait: 3-hour trend information with task bar.
2. Horizontally in landscape: 1, 3, 6, 12 or 24 hour trend information without task bar.
This section first familiarizes you with the app’s home screen, then with the receiver’s home
screen.
The app also supports two additional, and optional, ways that you can see your app’s CGM
information: the Today view widget and the Apple Watch. See Additional Ways to View Your
App’s CGM Information in this chapter for more detail.
In other chapters, you’ll see how to use the icons or use the navigation wheel to enter data or
make system changes.
App Home Screen
The app’s home screen has two main sections:
1. The Task Bar. This is where you go to do tasks such as changing settings and entering
data.
2. The Glucose Information area. This area displays your sensor glucose readings and
trends.
Task Bar
Glucose Information
Figure 6. App Home Screen on Mobile Device
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Task Bar
App
Name
What it means
What you do
Task Bar: Complete Tasks
Tap Main Menu
icon to access:
Main Menu
Goes to other options.
• Alerts
• Settings
• Help
• Start/Stop
Sensor
BG Meter
with red circle Calibration Prompt.
and number
Tap icon and
enter fingerstick
BG value (see
Chapter 7).
BG Meter
without red
circle
Do nothing.
Event
No need to calibrate.
Enter different events
capturing activities
affecting your
glucose.
Tap icon to enter
data for:
• Carbs
• Insulin
• Exercise
• Health
(See Chapter 10).
Dexcom
Share
Dexcom
Share
Dexcom Share is only
available on the app.
Gray icon means
Share is not active.
Once activated,
Dexcom Share icon is
colored.
Tap icon to activate
(see Part 5).
Do nothing.
Tap icon to access
Dexcom Share.
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Glucose Information
App: Portrait
App: Landscape
What it means
Home Screen
In Landscape mode,
tap on the trend view
you want to see at the
top of the screen: 1, 3,
6, 12, or 24 historical
trend views.
Number: Most recent
sensor glucose
reading.
Shown in milligrams
per deciliter(mg/dL).
1. Yellow: At or
above target
2. Gray: Within
range
3. Red: At or below
target
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App: Portrait
App: Landscape
What it means
Historical Readings
Turn smart device to
Landscape mode.
Tap time, shows
timeframe’s sensor
glucose reading.
N/A
Slide finger across
screen to view rest of
day’s sensor glucose
readings.
N/A
Rate of Change
Arrow
Direction and number
of arrows show
sensor glucose
change rate.
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App: Portrait
App: Landscape
What it means
Sensor Glucose
Reading Range
Shows between
40-400 mg/dL.
Within Glucose
Range and Alert
Levels
1. Yellow Bar: High
Alert level
2. Gray
Background:
Within range
3. Red Bar: Low
Alert level
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App: Portrait
App: Landscape
What it means
Trend Graph
Timeframe
Default is most recent
3 hours.
Turn smart device
to Landscape mode
for most recent 1, 3,
6, 12, and 24 hour
readings.
Additional Ways to View Your App’s CGM Information
The Dexcom G5 Mobile App offers more ways to check on your CGM information apart from
opening the app. If you choose, you can expand the flexibility of your app by using either of
the following features:
• Dexcom G5 Mobile widget in the Apple Today view
• Dexcom G5 Mobile for Apple Watch
Safety Statements
PRECAUTION
Using an accessory device (like a smart watch) might override your smart device sounds.
Alarms or Alerts might vibrate or be heard on the accessory instead of your smart device.
After connecting any accessories, make sure that the smart device settings allow you to
continue receiving Alarms or Alerts on the smart device.
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The Dexcom G5 Mobile Widget in the Apple Today View
Check your CGM information on your smart device without needing to open the app, even
when the device is locked. Your Dexcom G5 Mobile App provides a widget for your Today
view that’s accessed by swiping down from the top edge of the screen.
Sensor Glucose
Reading
Trend Arrow
Trend Graph
Figure 7. The Dexcom G5 Mobile App widget in the Today view.
You can edit your widgets by clicking on the Edit button at the bottom of the Today view. See
your smart device instructions for the latest information on customizing your Today view.
The Dexcom G5 Mobile for Apple Watch
Check your CGM information on your wrist! The Dexcom G5 Mobile App supports Apple
Watch* and can be used to view your glucose reading, trend arrow, and trend graph.
Trend Arrow
Sensor Glucose
Reading
Trend Graph
Figure 8. The Dexcom G5 Mobile for Apple Watch
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To set up Dexcom G5 Mobile on your Apple Watch you’ll need to use the Watch app located
on your smart device. See your Apple Watch instructions for more detail on setting up an app
on the watch.
Your Apple Watch will only communicate with your smart device, not the Dexcom G5
Transmitter. You will not receive alerts, alarms, and other notifications on the watch unless it
is connected with your smart device. For example, if you have your watch on and you go out,
but leave your smart device at home, you will not receive any CGM updates.
When you wake your Apple Watch, it gets your current CGM data from your smart device.
There may be a brief delay before your watch app shows current information.
*For compatibility information see dexcom.com/compatibility.
Now that you’ve learned about the app’s home screen, let’s move our focus to the Dexcom
G5 Receiver.
Receiver Home Screen
Unlike your smart device screens, the receiver’s screen is not interactive; all prompts are for
information only. To make changes or enter data in the receiver, press Select and go to the
Main Menu.
The receiver’s home screen has two main sections:
1. Status Bar
a. Status Bar reflects glucose trends, readings, status of receiver’s system (e.g.,
battery level).
2. Glucose Information Trend Graph
a. Reflects sensor glucose readings and trends.
This section will get you familiar with the receiver’s home screen. In other chapters, you’ll
see how to use the navigation wheel to enter data or make system changes.
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Status Bar
Glucose
Information
Figure 9. Home Screen on Receiver
Status Bar
Receiver
Name
What it does
Status Bar
Provides at a
glance information
about the receiver,
system, or you.
Icons will change
based on current
data.
Battery
Shows battery
level.
Bluetooth
Shows Bluetooth
connection is
working.
What you do
Review and take
appropriate action.
When low, plug
micro USB cable
into receiver.
Plug USB into
the adapter and
then into electrical
outlet.
Do nothing.
Receiver’s
Bluetooth is always
on.
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Receiver
Name
What it does
What you do
Shows most recent
sensor glucose
reading. Color of
status bar changes:
Sensor Glucose
Reading
Trend Arrow
• Yellow: At or
above target
• Gray: Normal
range
• Red: At or
below target
Shows direction
and speed
your glucose is
changing.
Take appropriate
action.
Review and
take appropriate
action based on
fingerstick BG
value.
Far right.
Status Area
Error icons
and calibration
prompts.
Take appropriate
action.
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Glucose Information
Receiver
What it does
Home screen.
Number: Most recent sensor glucose reading.
Shown in milligrams per deciliter (mg/dL). Color of status bar
changes:
• Yellow: At or above target
• Gray: Normal Within range
• Red: At or below target
Historical Readings
Default is most recent 3 hours.
Press Up/Down Arrows to access 1, 3, 6, 12, or 24 hour
trend views.
Rate of Change Arrow
Direction and speed of your glucose changes.
Sensor Glucose Reading Range
Shows between 40-400 mg/dL.
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Receiver
What it does
Glucose target range Alert settings.
• Yellow Bar: High Alert setting
• Gray Fill: Normal range
• Red Bar: Low Alert setting
Now you’re familiar with the basic layout of the trend graph screen, can locate readings,
identify color coding, and view time frames. Let’s take a closer look at the rate of
change arrows.
9.4 Rate of Change Arrows
Not sure of how your sensor glucose readings are trending?
Rate of Change Arrows show the speed and direction of your glucose trends based on the
last several sensor glucose readings. Arrows and the trend graph help you know when to
take action before you are too high or too low.
However, before doing anything, think about your most recent insulin dosing, food intake,
overall trend graph, and your current BG value. Don’t overreact to the arrows. Remember
the arrows don’t reflect your latest reading: they reflect a combination of recent readings.
Rate of Change Arrows
App
Receiver
What your glucose is doing
Glucose is steady.
Not increasing/decreasing more than 1 mg/dL per
minute or up to 15 mg/dL in 15 minutes.
Glucose slowly rising 1-2 mg/dL each minute or up
to 30 mg/dL in 15 minutes.
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App
Receiver
What your glucose is doing
Glucose rising 2-3 mg/dL each minute or up to 45
mg/dL in 15 minutes.
Glucose rapidly rising more than 3 mg/dL each
minute or more than 45 mg/dL in 15 minutes.
Glucose is slowly falling 1-2 mg/dL each minute or
up to 30 mg/dL in 15 minutes.
Glucose is falling 2-3 mg/dL each minute or up to
45 mg/dL in 15 minutes.
Glucose is rapidly falling more than 3 mg/dL each
minute or more than 45 mg/dL in 15 minutes.
N/A
No arrow
System can’t calculate the speed and direction of
your glucose change.
There are a number of reasons why you may not get rate of change arrows:
• You just started your sensor session
• No sensor glucose readings over the last few minutes
9.5 Error Messages
Sometimes the transmitter, or sensor, or display devices aren’t communicating, causing you
not to get your sensor glucose readings or rate of change arrows. Each device notifies you
when there is an issue; however, the notifications look different.
Before the system can move forward, you need to address the error.
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App
1. If screen is locked:
a. Swipe message to go to app.
2. Within app:
a. Read message.
i. Tap Question Marks for more information and follow steps as appropriate.
Receiver
1. Press Select to clear message.
You will not get any sensor glucose readings or rate of change arrows on either display
device until the error is resolved. Check with your BG meter to monitor your glucose during
these error periods.
Error Messages
What you see
What you do
Bluetooth is Out of Range
Smart Device:
Lock Screen
Make sure there are no obstructions, such
as a wall or water between your transmitter
and your display device.
Smart Device:
In App
Move within 20 feet of display device.
Wait up to 30 minutes while transmitter
restores communication.
Receiver
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Bluetooth Off
Smart Device:
Lock Screen
Smart device:
1. Exit app.
2. Tap Settings.
3. Tap Bluetooth.
4. Turn Bluetooth on.
Smart Device:
In App
Receiver
N/A; Bluetooth is always
on.
Not Getting Sensor Glucose Reading
Smart Device:
Lock Screen
N/A
Smart Device:
In App
N/A
Check—Are you:
• Within 20 feet of your display device?
• In your two hour warmup period?
• Outside of your calibration schedule?
• In a sensor session?
Receiver
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System Found Temporary Sensor Issue
Smart Device:
Lock Screen
N/A
Don’t calibrate.
Smart Device:
In App
System may correct problem on its own
and display sensor glucose readings again.
If prompt stays for three hours:
Contact Technical Support (see Section
16.1).
Receiver
Transmitter and Sensor not Communicating
Smart Device:
Lock Screen
N/A
Wait three hours while the transmitter tries
to fix the error.
Do not enter calibrations during this time.
Smart Device:
In App
Make sure your transmitter is properly
inserted into the sensor pod.
If not corrected:
• Contact Technical Support (Section
16.1)
• Remove sensor
• Insert new sensor
Receiver
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Calibration Required
Smart Device:
Lock Screen
Smart Device:
In App
Error in calibrating.
Enter another BG meter value.
Receiver
Calibration Error
Smart Device:
Lock Screen
N/A
Smart Device:
In App
Wait 15 minutes.
Enter a BG meter value.
Receiver
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Display Devices and Transmitter not Communicating
Smart Device:
Lock Screen
Wait 10 minutes.
Smart Device:
In App
Move display device and transmitter within
20 feet of each other without obstruction
(walls or water).
Wait up to 30 minutes.
Receiver
In app (if not resolved):
1. Tap Settings.
2. Tap Bluetooth.
3. Turn Bluetooth Off and On.
If error messages don’t go away after you followed necessary steps, and you aren’t getting
sensor glucose readings, contact Technical Support (see Section 16.1).
Now You Can:
• Recognize home screen icons
• Locate sensor glucose reading
• Explain glucose target range
• Recognize the importance of gray, yellow, and red colors
• Identify low/high alert glucose setting lines
• Describe when you receive a High or Low sensor glucose reading
• Change Trend Graph Hours view
• Cite differences between rate of change arrows
• Recognize error messages
What’s Next?
By now you have a pretty good understanding how your trends look on the different display
devices, but did you know what you do can affect your trends and patterns? It’s important
to track actions or well-being, to better understand what you do or how you feel can change
your trends.
In
the next chapter, you will learn how to enter Events in the Dexcom G5 Mobile System.
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Chapter 10
Next Steps:
Daily Events Affect Your Glucose Trends and
Patterns
10.1 Introduction
Your daily activities can impact your glucose trends and patterns. In the previous chapter,
you learned how to read your glucose trend screens; in this chapter, you learn how to
enter situations, or “Events”. By tracking Events, you can determine how certain actions or
circumstances affect your glucose levels.
After this chapter, you’ll be able to:
• Define Event
• Describe each Event
• Create Events
○○ Dexcom G5 Mobile App
○○ Dexcom G5 Mobile Receiver
• Recognize Event markers on the Dexcom G5 Mobile App
○○ Describe how Event markers are different in portrait and landscape view
• Describe how to view Events entered via your receiver
• View Event markers on your smart device
10.2 What Is an Event?
Did you take a walk after lunch today? Did you go to happy hour with your co-workers
and have a beer? Are you feeling stressed? Did you catch your kid’s sniffles? How much
insulin did you take for your dinner meal? These are all Events that can raise or lower your
blood sugars.
An Event is an action or situation affecting your glucose levels. With the Dexcom G5 Mobile
CGM System, you have the ability to enter your daily Events, helping you track their effect on
your glucose trends. Once entered into the smart device or receiver, Events can be viewed in
Dexcom reports. The reports help you review how each Event influenced your glucose trends.
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You can use the reports with your healthcare professional to create a game plan in managing
your diabetes.
Even though they differ on how to enter an Event and time, the app and receiver have the
same Event categories and subcategories. Later in this chapter, you’ll learn how to enter
Events in each device.
Event Categories
There are four main Event categories:
1. Carbs
2. Insulin
3. Exercise
4. Health
The fourth category, Health, has more options:
• Illness
• Stress
• Feel High
• Feel Low
• Cycle
• Alcohol
The following table provides more detail on each type of Event.
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Events Menu
Device
What you see
What it means
What you do
Carbs
Smart Device:
In App
How many grams
did you just eat?
Receiver’s screen
reflects last number
entered.
Enter Carb grams
per snack or meal,
up to 250 grams.
Receiver
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Device
What you see
What it means
What you do
Insulin
Smart Device:
In App
Receiver’s screen
reflects last number
entered.
Enter insulin units
for each dose, up to
250 units.
Can’t enter type of
insulin, only dosage.
Receiver
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Device
What you see
What it means
What you do
Exercise
Smart Device:
In App
Defaulted at 30
minutes.
Select each
exercise’s intensity
level and duration.
Enter intensity and
duration.
Type of exercise
isn’t an option.
Receiver
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Device
What you see
What it means
What you do
General well being.
Enter different
health Events (see
following Health
Events Menu table).
Health
Smart Device:
In App
Receiver
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Device
What you see
What it means
What you do
Event time.
For each separate
Event, enter
date/time Event
began.
Event Time
Smart Device:
In App
Receiver
As mentioned in the last table, Health has a series of Events. Tell the system how you are
feeling, if you had a drink, if you’re having low or high BG symptoms, etc. You select the
Event: no amounts are entered, just date and time.
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Health Events Menu
Device
What you see
What it means
Health Main Menu
Smart Device:
In App
Use Health Main Menu to access
selections.
Receiver
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Device
What you see
What it means
Health Events
Smart Device:
In App
Illness
Have a cold, flu, or any other temporary
illness affecting your well-being?
Stress
Are you under stress? Feeling anxious?
High Symptoms
Feel high BG symptoms?
Low Symptoms
Feel low BG symptoms?
Cycle
Have you started your menstrual cycle?
Alcohol
Had a glass of wine, beer, or cocktail?
Receiver
You can have multiple Events in a single day, or even during the same time frame and enter
them all in at the same time. As an example, you’re running late because of traffic (Stress)
and quickly swing by a drive-thru to get lunch (Carbs of 85 grams).
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For your convenience (and safety!), no need to stop everything and enter your Events as they
are happening. When you have a moment, you can enter your Events retroactively in your app
or receiver.
Events are meant to be entered as individual occurrences: don’t enter daily totals, enter each
Event separately.
In the next section, you will learn how to enter Events, first in your smart device, then into
the receiver.
10.3 Entering Events
You probably will enter Events in your in the display device you use most often; however, you
should know how to enter Events into each.
First, let’s look at how to enter Events in a smart device, then in the receiver.
When using Dexcom Share, you can allow your Followers see your Event entries. For more
Dexcom Share information, please see Part 5.
Enter Events: Smart Device
In the Dexcom G5 Mobile App, Events are just a tap away! The Event icon, a running man, is
on the app’s home screen’s task bar in portrait mode (remember, you don’t have the task bar
in landscape).
Entering Events for Carbs, Insulin, Exercise, and Health’s categories follow the same steps.
If you can enter a Carb Event, you can enter an Insulin Event. To enter Events, we’ll use the
above scenario. The following table shows how to enter Carb (drive-thru lunch) and Stress
(traffic jam) Events.
Entering Events: Dexcom G5 Mobile App
Step
What you see
What you do
Enter Carb Event
Tap Running Man.
1
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Enter Carb Event
Tap Carbs.
2
Add up all carb grams from lunch.
Enter “85” using keypad.
3
Tap Done.
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(Continued from previous page)
Enter Carb Event
Tap Event Time.
4
Scroll and select date and time.
5
Tap Done.
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Enter Carb Event
Tap Save or Cancel.
6
Enter Stress Event
7
Tap Running Man.
8
Tap Health.
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(Continued from previous page)
Enter Stress Event
Tap Stress.
9
Tap Done.
Tap Event Time.
10
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Enter Stress Event
Scroll and select date and time.
11
Tap Done.
Tap Save or Cancel.
12
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Enter Stress Event
Turn to landscape.
14
The receiver and app don’t talk to one another. If you enter an Event only into the receiver,
while the information will appear on Dexcom reports, you won’t get an Event marker on your
app’s Trend screen.
The app has Event markers on its screen, the receiver doesn’t.
There may be times when you want or need to enter Events on the Dexcom G5
Mobile Receiver.
Enter Events: Dexcom G5 Mobile Receiver
While the Event data is the same between display devices, the flow is not the same, including
how to enter the Event’s date and time. The following table reviews how to enter the same
Carb/Stress Event data from the previous scenario: Carbs at 85, and a Stress Event.
Entering Events: Receiver
Step
What you see
What you do
Enter Carbs Event
1
Default screen
Press Select to go to Main Menu.
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Enter Carbs Event
2
3
Press Down Arrow until Events is highlighted.
Press Select.
Highlight Carbs.
Press Select.
Add up all carb grams from lunch.
4
Arrow up to “85.”
Press Select.
Press Left/Right Arrows to change time and date.
5
• Left: Backwards
• Right: Forward
Press Select.
6
Confirmation screen.
Press Select.
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Enter Health Event
7
8
Press Down Arrow until Health.
Press Down Arrow to Stress.
Press Select.
Press Left /Right Arrows to change time and date.
9
• Left: Backwards
• Right: Forward
Press Select.
Verify information is correct.
10
Press Left /Right Arrows to highlight field.
Press Up/Down Arrows to change numbers.
Press Select to save.
10.4 Viewing Events
Events entered into your receiver can only be viewed on a Dexcom report; there are no
markers on your receiver’s screen.
On your smart device, turn to landscape to view your Event markers. A single small
square marks all Events. Slide your finger across the screen or tap the square to get your
Event’s information.
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Landscape
What it does
What you do
Landscape Only
Landscape Only
Show Event details.
• Tap square
• Slide finger across
screen
Once you have allowed your Share Follower’s access to your Trend screen, they too will be
able to view your Events. See Part 5 for more information.
Summary
Now You Can:
• Define Event
• Describe each Event
• Create an Event
○○ Dexcom G5 Mobile App
○○ Dexcom G5 Mobile Receiver
• Recognize Event Markers on the Dexcom G5 Mobile App
○○ Describe how Event Markers are different in portrait and landscape view
• Describe how to view Events entered via your receiver
What’s Next?
In the next chapter, you will learn about your trend’s Alarm and Alerts helping you monitor
you glucose levels. You’ll also learn how you know when your system loses its signal and
stops communicating.
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Chapter 11
Next Steps:
Sensor Glucose Alarm and Alerts
11.1 Introduction
Monitoring your glucose trends is critical in managing your diabetes. But what happens if
you’re driving, in a meeting, at the movies, and can’t or, don’t want to, keep looking at your
display device?
Dexcom’s G5 Mobile CGM System understands there are times when you can’t look at your
receiver or smart device; however you still need to know of actionable glucose trends or if
you’re not getting your sensor glucose readings.
This chapter reviews the sensor glucose Alarm and Alerts based on your sensor glucose
readings, allowing you to proactively manage your glucose trend levels and make sure your
transmitter is communicating with your display device.
In the next chapter, you’ll learn how to customize the Alarm and Alerts.
After this chapter you will be able to:
• Define an Alarm
• Define an Alert
• Identify the different types of Alerts
• Describe the difference between an Alarm and an Alert
• Recognize different Alarm/Alert prompts and sounds
• Determine signal loss is preventing you from getting an Alarm or Alert
• Describe recommended app settings
• Successfully clear an Alert notification
○○ Dexcom G5 Mobile App
○○ Dexcom G5 Mobile Receiver
Your trending information is one of the greatest benefits of the Dexcom G5 Mobile System.
It’s important to focus on your trends and rate of change arrows, rather than the exact
number of your glucose reading
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11.2 Safety Statements
The Alarm and Alerts were designed to keep you safe, helping you avoid severe lows and
highs or from missing your readings. The following safety statements help ensure you get
your Alerts and Alarm.
WARNING
Do: Verify your smart device settings let you get Alarm and Alerts.
To receive Alarm/Alerts you must:
1. Make sure Dexcom G5 Mobile App Notifications are turned on in Settings menu
2. Verify app hasn’t been shut down.
3. Adjust volume so you can hear sounds.
4. Turn Bluetooth on.
5. Turn off Do Not Disturb.
6. Keep Dexcom G5 Mobile App running in the background.
7. Restart app after device is restarted.
Why: Your apps settings do not override phone settings.
Consequences: Missing severe low or high Alarm or Alerts.
WARNING
Don’t: Never assume the Dexcom G5 Mobile CGM System’s Alarm/Alert vibrations are
different from other vibrating apps.
Do: Look at your smart device and check if vibration is a Dexcom G5 Mobile CGM System
Alarm or Alert.
Why: Medical device apps don’t have special priority over your smart device’s features.
You can’t determine if the vibration is coming from your Dexcom G5 Mobile App or
another app.
Consequences: Missing severe low or high Alarm or Alerts.
WARNING
Do: Unplug headphones from your smart device when not in use.
Why: If headphones are plugged in while not being used, you won’t hear an Alarm or Alert.
Consequences: Missing severe low or high Alarm or Alerts.
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PRECAUTION
Don’t: Never prevent communication between transmitter and display devices.
Do: Keep smart device and receiver within 20 feet of transmitter and away
from obstructions.
Why: If your transmitter display device(s) are more than 20 feet apart or are separated by
an obstruction, they might not communicate.
Types of obstruction differ and not all types have been tested. Obstructions can include
water, walls, metal, etc.
Water (e.g., swimming, surfing, bathing, etc.) can severely limit communication range.
Consequences: Missing severe low or high Alarm or Alerts.
PRECAUTION
Do: Set smart device and receiver settings separately.
Why: Settings are specific to each display device and don’t carry over to other devices. If
you set up one device and then use another, you won’t get an Alarm or Alert.
Consequences: Missing severe low or high Alarm or Alerts.
PRECAUTION
Do: Verify smart device and receiver are turned on.
Why: Neither the receiver nor smart device will generate sensor glucose readings, Alarm
or Alerts if turned off.
Consequences: Missing severe low or high Alarm or Alerts.
11.3 Alarm and Alerts
As part of managing your diabetes, you learned how to read your Trend screen and how
to enter Events. In this chapter, you’ll learn how Alarm and Alerts can keep you safe from
severe lows or highs.
Depending on your display device, you can customize how you receive your Alarm or Alerts.
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What Is an Alarm?
While there are a variety of Alerts, there is just one Alarm, the Urgent Low Alarm (Alarm) is
set at 55 mg/dL. The Alarm will repeat every 5 minutes until you clear the Alarm (see Chapter
12 on how to customize the sounds). If you clear the Alarm and your sensor glucose readings
do not go over 55 mg/dL in the next 30 minutes, you get another Alarm.
Unlike Alerts, the Urgent Low Alarm setting can’t be changed or turned off. Think of it as a
safety net: your glucose level is dangerously low—pay attention now!
What Are Alerts?
An Alert is a message telling you your glucose trend levels need attention.
Low/High glucose Alerts tell you when your sensor glucose readings are outside your target
glucose ranges. Think of them as an FYI: You need to know what’s happening, Rising/Falling
Alerts tell you your glucose levels are changing quickly. Their default settings are Off (see
Chapter 12 on how to turn them on).
Alerts message you with vibrations (vibrations not available on all smart devices), visual
prompts, sounds, or a combination of all three.
Unlike the Alarm, you can customize your different Alert’s target range (Chapter 12).
During your initial set up, you establish your low and high alert levels. As mentioned before,
this chapter is a review of the Alarm and Alerts, recommended smart device settings and the
receiver’s default Alert settings.
Chapter 12 will show you how to change their settings: customize glucose levels prompts,
how you are notified, and in some cases, how often you get notified. The following are
the defaults.
Default Alerts
Low/High Alerts
Your Low/High Alerts have the same color coding as your Trend Graph screen:
1. Red: Glucose levels are below your low threshold.
a. Default setting of 80 mg/dL.
2. Gray: Glucose levels are within your high/low Alert levels.
a. No Alerts.
3. Yellow: Glucose levels are above your high threshold.
a. Default setting of 200 mg/dL.
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Rise Rate/Fall Rate/Repeat/Signal Loss Alerts
Rise Rate and Fall Rate Alerts warn you when your glucose levels are changing rapidly, either
down or up, and look similar to the rate of change arrows. Repeat Alerts let you know if your
sensor glucose readings continue to be above or below your Alert levels.
Glucose Level Alerts
1. Rise Rate
a. Default setting is Off—No Alert.
b. Need to change settings to receive Rising Alert.
2. Fall Rate
a. Default setting is Off—No Alert.
b. Need to change settings to receive Falling Alert.
3. Repeat
a. Default setting is Off—No Alert.
b. Need to change settings to receive Repeat Alert.
Signal Loss Alert
Signal Loss tells you when you and the transmitter are too far from your display device
or something is blocking your transmitter signal, causing you not to get sensor glucose
readings. The default setting for Signal Loss is On.
Now you have the basics for Dexcom’s G5 Mobile’s Alarm/Alerts feature. Next, you will learn
about each Alarm/Alert in more detail.
11.4 Alarm and Alerts Screens
When you fall within an Alarm or Alert target range, your display device tells you. As
mentioned in previous chapters you won’t get any Alarm or Alerts within five minutes
of calibration.
Let’s first review how the information is presented visually across the devices. While the
Alarm/Alerts prompts look different on the display devices, they reflect the same information.
After prompts we’ll separately review the vibration and audible Alarm/Alerts for app
and receiver.
Alarm and Alerts look different based on your display device, but reflect the
same information.
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Urgent Low Glucose Alarm
Device
What you see
What it means
Smart Device:
Lock Screen
Smart Device:
In App
Sensor glucose reading at or below 55
mg/dL.
Shows last glucose value.
Arrows reflect rate of change.
Check BG meter to make treatment
decisions.
Receiver
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Low/High Glucose Alerts
Device
What you see
What it means
Smart Device:
Lock Screen
Sensor glucose reading at or below your
low Alert level.
Smart Device:
In App
Shows most current sensor glucose
reading.
Arrows reflect rate of change.
Can be set to repeat between 15 minutes
to 4 hours.
Check your BG meter to make any
treatment decisions.
Receiver
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Device
What you see
What it means
Smart Device:
Lock Screen
Sensor glucose reading at or above your
high Alert level.
Smart Device:
In App
Shows most current sensor glucose
reading.
Arrows reflect rate of change.
Can be set to repeat between 15 minutes
to 4 hours.
Check BG meter to make treatment
decisions.
Receiver
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Rise Rate/Fall Rate Alerts
Device
What you see
What it means
Smart Device:
Lock Screen
Sensor glucose readings
rising quickly.
Smart Device:
In App
Number of arrows shows
how fast (2 mg/dL/min;
3+ mg/dL/min).
Check BG meter to make
any treatment decisions.
Receiver
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Device
What you see
What it means
Smart Device:
Lock Screen
Smart Device:
In App
Sensor glucose readings
falling quickly.
Number of arrows shows
how fast (2 mg/dL/min;
3+ mg/dL/min).
Check BG meter to make
any treatment decisions.
Receiver
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Signal Loss Alert
Device
What you see
What it means
Smart Device:
Lock Screen
Smart Device:
In App
Your receiver and transmitter are not
communicating.
You will not receive Alarm/Alerts.
Check BG meter to check your glucose and
make any treatment decisions.
Receiver
11.5 App: Alarm/Alert Recommended Settings
The receiver is a stand-alone medical device and used solely to monitor your glucose trends.
The app cannot override the smart devices general settings.
The app can’t override your smart device settings:
• When your smart device is on Silent, you’ll still receive Alarms and Alerts visual prompts
and messages, but not vibrations if you haven’t adjusted your smart device settings
• Some smart devices don’t have a Vibration feature, so you won’t get any
vibration notifications
• When your ringer’s volume is low, you may not hear an Alarm or Alert
• When your smart device is in Do Not Disturb mode, you won’t receive any Alarm/Alerts.
The Dexcom G5 Mobile App can’t override the Do Not Disturb setting
• If you don’t enable your Dexcom G5 Mobile push Notifications settings during set up, you
won’t get any Alarm/Alerts
• Check in Settings under Notifications on how your Alarm/Alerts are prioritized
For information on smart device settings, see your smart device’s instructions.
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If you are concerned about missing an Alarm or Alert (e.g., due to smart device settings,
app shutting off due to lack of storage, low smart device battery, etc.), bring your receiver
with you.
11.6 Receiver: Default Beeps and Vibrations
The Dexcom G5 Mobile Receiver’s Alarm/Alerts are vibrations and a beep, or a series of
beeps, based on the Alarm or Alert. Beeps and vibrations are preprogrammed into the
receiver, and unlike the smart device, the volume can’t be changed.
In Chapter 12 you’ll learn how to adjust the volume and intensity of your Alarm/Alerts.
The following is a table of the receiver’s default beep and vibration patterns. If you clear
the Alert’s initial vibration, you won’t get any beeps or sounds unless you’ve turned on the
Repeat Alert.
In the next section, you’ll learn how to clear the Alarm/Alerts.
Urgent Low Glucose Alarm
What you see
Beeps and vibration
Initial Default Alert:
Vibrates 4x’s.
After 5 Minutes:
Vibrates/beeps 4x’s every 5 minutes until cleared or sensor
glucose readings go above Alarm level.
After 30 Minutes:
After clearing Alarm, continues to notify if sensor glucose
readings remain at or below Alarm level.
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Low/High Glucose Alerts
What you see
Beeps and vibration
Initial Default Alert:
Vibrates 3x’s.
After 5 Minutes:
Vibrates/beeps 3x’s every 5 minutes until cleared.
Trend screen will continue to reflect Alert until sensor
glucose readings go above Alert level.
Initial Default Alert:
Vibrates 2x’s.
After 5 Minutes:
Vibrates/beeps 2x’s every 5 minutes until cleared.
Trend screen will continue to reflect Alert until sensor
glucose readings go below Alert level.
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Rise Rate/Fall Rate Alerts
What you see
Beeps and vibration
Initial Default Alert:
None/Off.
After Setting Change:
Vibrates 2x’s, 2 sounds.
After 5 Minutes:
Vibrates/beeps 2x’s every 5 minutes until cleared.
Initial Default Alert:
None/Off.
After Setting Change:
Vibrates 3x’s.
After 5 Minutes:
Vibrates/beeps 3x’s every 5 minutes until cleared or sensor
glucose reading drops below Alert level.
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Low Repeat/High Repeat
What you see
Beeps and vibration
Initial Default Alert:
None/Off.
After Setting Change:
Vibrates 3x’s.
After 5 Minutes:
Vibrates/beeps 3x’s every 5 minutes until cleared.
Will re-alert if sensor glucose readings drop at or below 55
mg/dL.
Initial Default Alert:
None/Off.
After Setting Change:
Vibrates 2x’s.
After 5 Minutes:
Vibrates/beeps 2x’s every 5 minutes until cleared.
Signal Loss Alert
What you see
Beeps and vibration
Initial Default Alert:
On.
After Setting Change:
Vibrates 1x.
After 5 Minutes:
Vibrates/beeps 1x every 5 minutes for a total of 6 times if not
cleared.
After 6 times it will not alert again.
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11.7 Clearing Alarm/Alerts
Alerts require you to acknowledge and clear them. How this is done depends on your display
device. If using both display devices, you’ll need to clear each separately.
Due to their medical importance, the Alarm is more persistent. Even after acknowledging and
clearing an Alarm, if your sensor’s glucose readings remain at or below 55 mg/dL, an Alarm
will sound every 30 minutes until readings are above 55 mg/dL.
Clearing Your Smart Device
Device
What you see
What you do
Smart Device:
Lock Screen
Slide Alarm or Alert to access app.
Smart Device:
In App
Tap OK to accept Alarm or Alert.
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Clearing Your Receiver
What you see
What you do
Press Select.
Once cleared, you won’t receive the same Alert unless you hit the Alert’s target range
again. Your Alarm will repeat even after clearing if your glucose levels do not return to your
target range.
Summary
Now You Can:
• Define an Alarm
• Define an Alert
• Identify the different types of Alerts
• Describe the difference between an Alarm and an Alert
• Recognize different Alarm/Alert prompts and sounds
• Determine if signal loss is preventing you from getting an Alarm/Alert
• Describe recommended app settings
• Successfully clear an Alert notification
○○ Dexcom G5 Mobile App
○○ Dexcom G5 Mobile Receiver
What’s Next?
Up to now, you have learned about the Alarm or Alert default settings. But what do you
do if you want to decrease the High Alert glucose level threshold, or you want to continue
getting a Low Alert notification if your glucose levels don’t improve, even though you cleared
the message?
How do you make your Alarm/Alerts fit your needs?
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Chapter 12
Next Steps:
On the Go With G5: Customizing Your Alarm
and Alerts
12.1 Introduction
The receiver and app come with default glucose Alert level settings, but perhaps they don’t
reflect the glucose level that works best for you.
Perhaps you’re in a meeting and can only clear an Alert, yet want to make sure your Alert
repeats, or continues, until you’re able to take corrective measures. Maybe you’d like to get a
Rising/Falling glucose Alert, but their settings are off by default. How do you turn them on?
In this chapter, you’ll learn how to personalize your Alarm and Alerts tones and
glucose levels.
Afterwards, you will be able to:
• Customize your Low/High Alerts
○○ Dexcom G5 Mobile App
○○ Dexcom G5 Mobile Receiver
• Adjust Alarm sound notification
• Use receiver’s Advanced Alerts
○○ Low/High Repeat
○○ Rise/Fall Alerts
○○ Signal Loss
Each display device has customization options; however the setup flow is different. Before
making any changes to your Alert levels, talk with your healthcare professional.
First, let’s take a look at personalizing your app Alarm and Alerts, and then we’ll review the
same process for the receiver.
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12.2 Safety Statement
WARNING
Do: If using both receiver and app for to get an Alarm or Alert, change settings in each
display device.
Why: Any changes to the G5 Mobile app will not carry over to the receiver.
Consequences: Missing severe low or high Alarm or Alerts.
12.3 Changing App Alarm and Alerts
App Screen Overview
The Alerts Main Menu lists all customizable Alerts and Alarm and their current settings. Part
of your initial set up included setting your Low/High Alerts. In this chapter, you’ll learn how to
change them.
Before learning how to change your settings, let’s review the app’s Alerts Main Menu screen.
Customizing Alerts: App Alarm/Alerts Screen
Overview
Step
What you see
1
What it means
What you do
Access Main Menu.
Tap Main Menu icon.
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Step
What you see
2
What it means
What you do
Access Alerts Main
Menu.
Tap Alerts.
All customizable Alarm
and Alerts.
Current Alert settings.
3
All alerts have:
Tap Alarm/Alert you
want to change.
• On/Off switch
• Notify me options
• Sound options
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Step
What you see
What it means
What you do
“?” explains:
4
• Each Alarm/Alert
• Message options
• Recommended
settings
Tap “?” for Alarm/Alert
information.
Urgent Low Glucose
Alarm:
5
• Preset at 55
mg/dL and cannot
be changed
• Repeat preset at 30
minutes and can’t
be changed
• Sound is the only
change option
Tap Sound to change
sound.
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Steps to Customize App Alarm/Alerts
Although the results will vary depending on what Alarm or Alert you are customizing, the
steps to change your Alarm or Alert are the same:
From app’s Main Menu:
1. Tap Alerts.
2. Tap the Alert you want.
a. Tap On or Off switch to turn on desired Alerts.
3. Tap Notify me.
a. Change the Alert glucose level (mg/dL).
i. Scroll selection wheel, find your desired Alert level.
ii. Tap to highlight.
iii. Tap Save.
4. Tap Repeat.
a. Change the amount of time you want between your High/Low Alerts if your
sensor glucose readings continue to be low or high.
i. Scroll selection wheel, find your desired Alert level.
ii. Tap to highlight.
iii. Tap Save.
5. Tap Sound.
a. Assign a different sound to each Alarm or Alert.
i. Scroll selection wheel, find your desired sound.
ii. Tap to highlight.
iii. Tap back arrow.
In this following example, we’ll change the High Alert level from 200 mg/dL to 190 mg/dL,
repeating every hour if you continue to stay high, with a Door Bell sound.
Customizing Alerts: App
Step
What you see
What it means
What you do
Access Main Menu.
Tap Main Menu icon.
Access Alerts’ Main Menu
1
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Access Alerts’ Main Menu
2
Access Alerts Main
Menu.
Tap Alerts.
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Changing an Alert
3
Access High Alert
settings (mg/dL).
4
Shows High Alert
options and current
settings.
Tap High mg/dL.
Check High Alerts is On.
• On - Orange
• Off - Gray
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Changing an Alert
If Off:
On
5
Won’t get Alerts if Off.
Slide to On.
• On - Orange
• Off - Gray
6
Change High Alert
(mg/dL).
Tap Notify Me Above.
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Changing an Alert
7
Change glucose level
from current level
(mg/dL).
Scroll selection wheel.
Stop at 190.
Saves new High Alert
glucose level (mg/dL).
8
Returns to High Glucose
Alert screen options.
Tap Save.
Notify Me Above set at
190 mg/dL.
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Changing an Alert
9
Changes how often
your High Alert repeats
after initial Alert and
confirmation.
Tap Repeat.
Repeats only if you are
above your high glucose
level.
Changing the current
repeat setting.
10
Can select in five
minute steps (range 15
minutes-4 hours).
Scroll selection wheel.
Stop at 1 hour.
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Changing an Alert
Saves your new repeat
timing.
11
Returns to High Glucose
Alert screen options.
Tap Save.
Repeat shows how often
you’ll get notified.
12
Customize Alert sound.
Tap Sound.
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Changing an Alert
13
14
Changes current sound
setting.
Saves your new Alert
sound.
Return to High Glucose
Alert Menu.
Tap Doorbell.
Tap Sound again to hear
sound sample.
Tap Back Arrow.
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Changing an Alert
15
Return to Main Menu.
Tap “X”.
Tap Menu icon
16
Return to trend screen.
Or
Swipe right.
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Any changes to the app will not carry over to the receiver. If using both, make the same
changes in the receiver you made in your smart device. If you don’t, you may miss an Alarm
or Alert.
12.4 Changing Receiver Alarm and Alerts
You’ll notice a flow difference between the app and the receiver when personalizing your
Alarm/Alerts. With the app, all Alert adjustments are made from one screen, whereas in the
receiver, you make changes in different screens.
Unlike the app, you change your receiver’s tones (known as Profiles) through a number of
different screens in the Profiles menu.
Profiles
Profiles determine the sound and volume of your Alarm and Alerts.
As mentioned in the previous chapter, the receiver uses a series of beeps/vibrations for an
Alarm or Alert. The receiver doesn’t have the same variety of tones as the app; however you
can adjust their volume. While the receiver doesn’t have a silent mode, selecting Vibrate will
replace audible beeps with quiet vibrations. The only exception is the Alarm: the urgent low
Alarm can’t be turned off.
Changes made in Profiles are applied to all of the receiver’s Alarm/Alerts. If you choose Soft
(see next table), all Alerts are in Soft mode. In Chapter 10, you learned how many beeps each
Alarm/Alert has.
Normal is the default setting for your receiver sound Profiles.
Attentive uses a rising or falling melody instead of beeps.
The receiver first vibrates when sending you an Alarm or Alert. If you clear the alert at the
first vibration by pressing the Select button on your navigation wheel, you won’t get any
Alarm/Alert tones. If you would like to continue to get your Alarm or Alert after clearing, later
in this chapter you’ll learn about setting up Repeat Alerts.
HypoRepeat is very similar to the Normal Profile, but keeps repeating the fixed low alarm
every 5 seconds until your sensor glucose value rises above 55 mg/dL or you confirm by
pressing the Select button.
The next table lists the different sound Profiles, starting with the quietest, working its way up
to the loudest.
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Alarm/Alert Sound Profiles
Icon
Profile name
Notification description
Vibration only.
Vibrate
Only sound is your receiver vibrating.
Vibrate is not available for the Alarm.
Soft
Normal
Lower volume beeps.
Medium volume beeps.
Default Profile.
No beeps.
Attentive
• Rising melody for High and Rising Alerts
• Dropping melody for Low and Falling Alerts
Medium volume beeps.
HypoRepeat
Try It
Urgent low Alarm only.
Repeats fixed low alarm every 5 seconds until
sensor glucose reading rises above 55 mg/dL or is
confirmed.
Sample Profile setting before selecting.
After choosing your sound profile, changing it is just a few steps away! Change your Profile
throughout the day depending on what lays ahead: In a meeting? Select Vibrate. Going to a
ball game after work? Select Attentive.
The next table shows how to change a sound Profile, then sample how it sounds.
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Customizing Sound Profiles: Receiver
Step
What you see
What it means
What you do
1
Go to Main Menu.
Press Select.
2
Second Main Menu
screen.
3
Profiles adjusts volume
of Alarm/Alerts.
Press Down Arrow.
Profiles on second
screen.
Press Up/Down Arrow.
Stop at Profiles.
Press Select.
Press Up/Down Arrow.
4
Choose sound Profile.
Stop at desired Profile.
Press Select.
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Step
What you see
What it means
What you do
Sample sound:
Press Down Arrow.
Selected Profile check
marked.
5
Stop at Try It.
Press Select to have the
sound play.
Exit Profiles:
Press Left Arrow.
Repeat steps 2-5 to
change Profile.
6
N/A
Repeat as needed.
To Exit:
Press Left Arrow to
Main Menu.
Profiles allow you to change your Alarm and Alerts tones. The Alerts menu gives you options
for personalizing your glucose level Alerts, repeating Alerts, turning your Rising/Falling Alerts
on and turning on your Signal Loss Alert.
Alerts Main Menu
Low/High Alert option lets you adjust your low/high glucose Alert level (mg/dL).
Advanced gives you options to turn on Low/High Repeat, Rise/Fall Alerts and Signal
Loss Alert.
Low/High Repeat
In the previous chapter, you learned clearing an Alert stops it from repeating. If you want to
continue to be re-alerted until your glucose levels are back in your target range, turn on the
Repeat option.
Rise/Fall Rate
Your trend screen provides visual cues letting you know your sensor glucose readings are
falling or rising rapidly.
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Constantly looking at your screen may not be practical. You can customize your Rise/Fall
Alert with vibrations or beeps letting you know when your glucose is rising or falling (2
mg/dL/min or 30 mg/dL up or down in 15 minutes) or rising or falling rapidly (3 or more
mg/dL/min or 45 mg/dL or more up or down in 15 minutes).
The default setting for Repeat and Rise/Fall Rate is Off.
It’s important you discuss your alert settings with your healthcare professional.
Signal Loss
Signal Loss Alert tells you when your transmitter and receiver aren’t communicating. Set the
Signal Loss and get alerted if your sensor glucose readings have stopped due to a signal loss
anywhere from 20 to 200 minutes.
The default setting for Signal Loss is On.
Steps to Customize Receiver Alarm/Alerts
Using the same example from changing your app Alerts, let’s change the receiver’s High Alert
notification level from 200 mg/dL to 190 mg/dL, repeating every 60 minutes.
Follow the same steps turning on the Rise/Fall Alerts, and adjusting your Low Alerts.
Customizing Alerts: Receiver
Step
What you see
What it means
What you do
Go to Main Menu.
Press Select.
Change High Alert Level
1
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Change High Alert Level
2
Alerts option from the
Main Menu.
3
Enter Alerts menu
option.
Alerts’ option menu.
4
5
6
Lists different Alerts:
High/Low/Advanced
(Repeat, Rise/Fall,
Signal Loss) Alerts.
Press Down Arrow.
Stop at Alerts.
Press Select.
Press Up/Down Arrow.
Stop at High Alert.
Press Select.
Alert’s current settings.
Press Down Arrow.
Change your current
High Alert level.
Stop at Level.
Press Select.
Current setting.
Press Down Arrow.
Use Up/Down arrows to
change your High Alert
level (mg/dL).
Stop at 190 mg/dL.
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Change High Alert Level
7
Saves new High Alert
level.
Press Select.
Return to Alerts Menu.
Press Left Arrow.
To exit:
Turn Repeart On
Alerts Menu.
8
9
Choose Advanced to get
to Repeat Alert.
Enter Advanced Alert
options.
Press Down Arrow.
Stop at Advanced.
Press Select on
Advanced.
Main Advanced screen.
10
11
Set Repeat Alerts.
Arrow to High Repeat.
Turn On Rise/Fall Rate
Alerts.
Press Select.
Initial screen shows
current repeat minutes.
Change time frame in 5
minute increments.
Press Up/Down Arrow.
Stop at 60 minutes.
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Turn Repeat On
12
13
Changed Repeat time for
Press Select.
High Alert.
Changed completed.
To exit:
Return to Alerts Menu.
Press Left Arrow.
It doesn’t matter which device you first use to customize your Alarm/Alert settings, key is
making sure you make the same changes in both or you may miss an Alarm or Alert.
Summary
Now You Can:
• Customize your glucose trend Low/High level notifications
○○ Dexcom G5 Mobile App
○○ Dexcom G5 Mobile Receiver
• Adjust Alarm tones
• Set up receiver’s Advanced Alerts
○○ Low/High Repeat
○○ Rise/Fall Rate
○○ Signal Loss
What’s Next?
Believe it or not, you are becoming a pro at using your Dexcom G5 Mobile CGM System!
You’ve set up the app and receiver, started a session, calibrated, followed your glucose
trends, paid attention to your Alarm/Alerts, prompts, and ended a session!
The next chapters begin our fourth part of the user guide: information you need to know, but
unlike the previous chapters, typically not part of your day-to-day Dexcom G5 Mobile CGM
System experience.
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The next part, Part 4: Everything Else G5, reviews the technical specifications, the warranty,
how to take care of the Dexcom G5 Mobile components, going through security when
traveling, contacting the Help Desk, Troubleshooting information, and symbols on system
components and packages.
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EVERYTHING ELSE G5
•Warranty
•Maintenance
•
Travel Tips
•
Customer Service Contacts
•
Technical Information
•Troubleshooting
•
Package Symbols
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Chapter 13
Everything Else G5:
Warranty: The Fine Print
13.1 Introduction
Sometimes stuff happens. Dexcom has you covered!
The following is our warranty information outlining what we do cover, what we don’t and
for how long. First the receiver’s limited warranty information, then the transmitter’s limited
warranty information.
13.2 Receiver Warranty Information
Dexcom G5 Mobile CGM System’s Limited Warranty
What’s Covered and for How Long?
Dexcom, Inc. (“Dexcom”) provides a limited warranty to the original purchaser (“you” or
“Purchaser”) that the Dexcom G5 Mobile Receiver (the “Receiver”) is free from defects
in material and workmanship under normal use (“Limited Warranty”) for the period
starting from the shipment date and continuing for a year following the shipment date
(“Warranty Period”):
Dexcom G5 Mobile Receiver: 1 year from shipment date
NOTE: If you received this Receiver as a replacement for an in-warranty Receiver, the Limited
Warranty for the original Receiver shall continue for the Warranty Period on the original
Receiver, but the replacement is not subject to any other warranty.
What’s Not Covered?
This Limited Warranty is based on the Purchaser properly using the CGM system in
accordance with the documentation provided by Dexcom. You are not permitted to use
the CGM system otherwise. You understand that misusing the CGM system, improperly
accessing it or the information it processes and transmits, “jailbreaking” your CGM system or
cell phone, and taking other unauthorized actions may put you at risk, cause the CGM system
to malfunction, is not permitted and voids your Limited Warranty.
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This Limited Warranty does not cover:
1. Defects or damage resulting from accident, misuse, abuse, neglect, unusual physical,
electrical or electromechanical stress, modification of any part of the product, or
cosmetic damage.
2. Equipment with the ID number removed or made illegible.
3. All surfaces and other externally exposed parts that are scratched or damaged due to
normal use.
4. Malfunctions resulting from the use of the Receiver in conjunction with accessories,
ancillary products, and peripheral equipment, whether hardware or software, not
furnished or approved by Dexcom.
5. Defects or damage from improper testing, operation, maintenance, installation,
or adjustment.
6. Installation, maintenance, and service of products or services other than the CGM
system (which may be subject to a separate limited warranty), whether provided by
Dexcom or any other party; this includes your cell phone or smart device and your
connection to the Internet.
7. Equipment which has been taken apart physically or which has had any of its software
accessed in any unauthorized manner.
8. Water damage to the Receiver.
a. Receiver is not water resistant.
b. Do not get the receiver wet at any time.
Dexcom’s Obligations Under the Limited Warranty
During the Warranty Period, Dexcom will replace, without charge to purchaser, any defective
Dexcom G5 Mobile Receiver.
To return, you must send the Receiver to an authorized Dexcom Technical Support
Department. Make sure you package the Receiver adequately for shipping.
The return package needs to include:
1. Receiver
2. Sales receipt or comparable substitute proof of sale showing the date of purchase
3. Receiver’s Serial Number
4. Seller’s name and address
Call Dexcom Technical Support Department for delivery information help:
• Toll free: 1.877.339.2664
• Charges may apply: 1.858.200.0200
Upon receipt, Dexcom will promptly replace the defective Receiver.
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If Dexcom determines the Receiver isn’t covered by this Limited Warranty, Purchaser must
pay all shipping charges for the Receiver’s return by Dexcom.
Limits on Dexcom’s Warranty and Liability Obligations
The Limited Warranty described above is the exclusive warranty for the Receiver, and in lieu
of all other warranties, expressed or implied, either in fact or by operation of law, statutory
or otherwise.
Dexcom expressly excludes and disclaims all other warranties, including without limitation
any warranty of merchantability, fitness for a particular purpose, or non-infringement, except
to the extent prohibited by applicable law.
Dexcom shall not be liable for any special, incidental, consequential, or indirect damages,
however caused, and on any theory of liability, arising in any way out of the sale, use,
misuse, or inability to use, any Dexcom G5 Mobile CGM System or any feature or service
provided by Dexcom for use with the Dexcom G5 Mobile CGM System.
These limits on Dexcom’s warranty and liability obligations apply even if Dexcom, or its
agent, has been advised of such damages and notwithstanding any failure of essential
purpose of this Limited Warranty and the limited remedy provided by Dexcom.
This Limited Warranty is only provided to the original Purchaser and can’t be transferred to
anyone else, and states Purchaser’s exclusive remedy.
If any portion of this Limited Warranty is illegal or unenforceable by reason of any law, such
partial illegality or enforceability shall not affect the enforceability of the remainder of this
Limited Warranty. This Limited Warranty will be enforced to the maximum extent permitted
by law.
13.3 Transmitter Warranty Information
Dexcom G5 Mobile Transmitter Limited Warranty
What’s Covered and for How Long?
Dexcom, Inc. (“Dexcom”) provides a limited warranty to the original purchaser that the
Dexcom G5 Mobile Transmitter is free from defects in material and workmanship under
normal use for the period commencing on the date of first use by the original purchaser (the
“Date of First Use”) and expiring three (3) months thereafter; provided, that, the Date of First
use occurs within five (5) months of the date of shipment (or disbursement) of the transmitter
to the original purchaser.
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NOTE: If you received this Transmitter as a replacement for an in-warranty Transmitter, the
Limited Warranty for the original Transmitter shall continue for the Warranty Period on the
original Transmitter, but the replacement is not subject to any other warranty.
What’s Not Covered?
This Limited Warranty is based on the Purchaser properly using the CGM system in a
timely manner and in accordance with the documentation provided by Dexcom. You are not
permitted to use the CGM system otherwise. You understand that misusing the CGM system,
improperly accessing it or the information it processes and transmits, “jailbreaking” your
CGM system or cell phone, and taking other unauthorized actions may put you at risk, cause
the CGM system to malfunction, is not permitted and voids your Limited Warranty.
This Limited Warranty does not cover:
1. Defects or damage resulting from accident, misuse, abuse, neglect, unusual physical,
electrical or electromechanical stress, modification of any part of the product, or
cosmetic damage.
2. Equipment with the ID number removed or made illegible.
3. All surfaces and other externally exposed parts that are scratched or damaged due to
normal use.
4. Malfunctions resulting from the use of the Transmitter in conjunction with accessories,
ancillary products, and peripheral equipment, whether hardware or software, not
furnished or approved by Dexcom.
5. Defects or damage from improper testing, operation, maintenance, installation,
or adjustment.
6. Installation, maintenance, and service of products or services other than the CGM
system (which may be subject to a separate limited warranty), whether provided by
Dexcom or any other party; this includes your cell phone or smart device and your
connection to the Internet.
7. Equipment which has been taken apart physically or which has had any of its software
accessed in any unauthorized manner.
8. Water damage to Transmitter.
a. Beyond specifications listed in Dexcom G5 Mobile CGM System’s User Guide.
b. User Guide is included in the Dexcom G5 Mobile System’s Receiver package.
c. Located on dexcom.com.
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13.4 Dexcom’s Obligations Under the Limited
Warranty
During the Warranty Period, Dexcom will replace, without charge to purchaser, any defective
Dexcom G5 Mobile Transmitter.
To return, you must send the Transmitter to an authorized Dexcom Technical Support
Department. Make sure you package the Transmitter adequately for shipping.
The return package needs to include:
1. Transmitter
2. Sales receipt or comparable substitute proof of sale showing the date of purchase
3. Transmitter’s Serial Number
4. Seller’s name and address
Call Dexcom Technical Support Department for delivery information or help:
• Toll free: 1.877.339.2664
• Charges may apply: 1.858.200.0200
Upon receipt, Dexcom will promptly replace the defective Transmitter.
If Dexcom determines the Transmitter isn’t covered by this Limited Warranty, Purchaser must
pay all shipping charges for the Transmitter’s return by Dexcom.
Limits on Dexcom’s Warranty and Liability Obligations
The Limited Warranty described above is the exclusive warranty for the Transmitter, and
in lieu of all other warranties, expressed or implied, either in fact or by operations of law,
statutory or otherwise.
Dexcom expressly excludes and disclaims all other warranties, including without limitation
any warranty merchantability, fitness for a particular purpose, or non-infringement, except to
the extent prohibited by applicable law.
Dexcom shall not be liable for any special, incidental, consequential, or indirect damages,
however caused, and on any theory of liability, arising in any way out of the sale, use,
misuse, or inability to use, any Dexcom G5 Mobile CGM System or any feature or service
provided by Dexcom for use with the Dexcom G5 Mobile CGM System.
These limits on Dexcom’s warranty and liability obligations apply even if Dexcom, or its
agent, has been advised of such damages and notwithstanding any failure of essential
purpose of this Limited Warranty and the limited remedy provided by Dexcom.
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This Limited Warranty is only provided to the original Purchaser and can’t be transferred to
anyone else, and states Purchaser’s exclusive remedy.
If any portion of this Limited Warranty is illegal or unenforceable by reason of any law, such
partial illegality or enforceability shall not affect the enforceability of the remainder of this
Limited Warranty.
This Limited Warranty will be enforced to the maximum extent permitted by law.
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Chapter 14
Everything Else G5:
How to Take Care of Your Dexcom G5 Mobile
CGM System
14.1 Introduction
There are not a lot of moving parts in the Dexcom G5 Mobile CGM System, so maintenance
is relatively simple: keep it clean, keep display device (s) dry and protected, use accessory
parts, like the USB cable, etc., given to you with the system and store according to each
piece’s labeling instructions.
This chapter only covers Dexcom parts (sensor, transmitter, and receiver). Follow the
manufacturer’s instructions when caring for your smart device.
After this chapter, you will be able to:
1. Demonstrate proper maintenance
a. Sensor
b. Transmitter
c. Receiver
d. Charge receiver battery
2. Determine what accessories you may use
3. Identify the best storage methods
a. Sensor
b. Transmitter
c. Receiver
4. How to safely dispose of
a. Sensor
b. Transmitter
c. Receiver
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14.2 Basic Maintenance
Sensor
1. Keep in sterile package until ready for use.
2. Check package label for expiration date.
a. Expiration date format is YYYY-MM-DD (year-month-day) format.
b. Don’t use if sensor has expired.
i. May provide inaccurate sensor glucose readings.
ii. May be unsterile.
Transmitter
1. Keep in box until ready for use.
a. Check transmitter and don’t use if damaged.
2. Transmitter is reusable, however only by the same person.
a. Never share transmitter with anyone.
3. Between uses, clean outside of the transmitter with damp cloth or alcohol wipes. Let
dry before use or storage.
4. When not in use.
a. Protect transmitter by returning to its packaging or another safe place.
b. Store between 32° F-113° F.
Receiver
1. Check receiver casing, if it’s cracked or damaged, don’t use.
a. May get an electric shock.
2. Keep receiver dry—it is only splash resistant.
a. Don’t submerge in liquid.
b. Don’t spill fluids on receiver.
3. Keep battery charged.
a. Only use Dexcom USB charging/download cable.
4. Keep the micro USB port cover closed if not using USB cable.
a. Prevents fluid from getting inside receiver.
Charging Receiver’s Battery
The receiver’s status bar lets you see its battery level and prompts you when the battery is
getting low. While the receiver is being charged, you will continue to get your sensor glucose
readings if the transmitter and receiver are within 20 feet of each other.
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Each charge lasts approximately three days. If your receiver’s battery was drained, after
charging, you may need to reset its time and date. If this is required, the system tells you to
reset and takes you to the time/date setting screens.
Step
What you see
What it means
What you do
1
Low Battery
Charge your battery.
2
Micro USB Port
Open USB port door.
Plug USB cable into port
for recharging.
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(Continued from previous page)
Step
What you see
What it means
What you do
Plug into receiver to
charge battery.
Don’t plug into a
computer port to charge
3
Micro USB Cable
Don’t use an external
USB hub, it doesn’t
provide enough power to
charge battery.
Battery can only be
charged using the
adapter/wall charger.
Charge battery before
each new sensor
session.
Plug USB cable into
adapter/wall charger.
4
Wall Charger
Plug wall charger into
an electrical outlet
to charge receiver’s
battery.
Don’t block access to
the charger.
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(Continued from previous page)
Step
What you see
What it means
What you do
5
Battery Charging
Keep charging until
icons are solid.
6
Battery Charged
Unplug wall charger
from outlet when fully
charged.
Remove USB cable from
receiver.
6
USB Port Door
Close USB port door
after removing USB
cable to keep receiver
clean and dry.
Accessories
1. Only use Dexcom-supplied parts (including cables and chargers).
a. Use of non-Dexcom supplied parts may affect safety and performance.
2. Insert cables only as directed.
a. Do not force cables in place.
3. Look at cables for signs of wear and tear. Do not use if worn or damaged.
There is no repair service available for any Dexcom G5 Mobile CGM System parts.
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If you experience problems, call Dexcom Technical Support, available 24 hours, 7 days a
week, toll free at 1.877.339.2664 or toll at 1.858.200.0200 to report the issue.
14.3 Storage
Storing your Dexcom G5 Mobile CGM System correctly helps prevents system failures.
Sensor
1. Keep the sensor in its sterile packaging until you are ready to use it.
2. Store at temperatures between 36° F-77° F.
a. Stored outside of this range may cause inaccurate sensor glucose readings.
b. May store in refrigerator if it’s within this temperature range.
c. Sensors should not be stored in freezer.
3. Store at humidity levels between 15%-85% relative humidity.
Transmitter
1. Keep transmitter protected when not in use.
2. Store at temperatures between 32° F-113° F.
3. Store at humidity levels between 10%-95% relative humidity.
Receiver
1.
2.
3.
4.
Keep receiver protected when not in use.
Fully charge the battery before storing for over 3 months.
Store at temperatures between 32° F-104° F.
Store at humidity levels between 10%-95% relative humidity.
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14.4 Checking App and Receiver Information
CHECKING YOUR APP & RECEIVER SOFTWARE VERSION
You can check your app or receiver for information about your CGM system at any time.
Receiver
1. From the Settings menu, press Up or Down arrows to scroll to “Device Info.”
2. Press Select. Information about your sensor session and system will show.
App
1. From Main Menu, tap Settings.
2. Tap Device Info.
Available Information
• Insertion Time
• Last Calibration
• Transmitter Battery
• Transmitter SN
• Serial Number
• Part Number
• Part Revision
• Software Number
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14.5 System Disposal
Different municipalities have different requirements when throwing away electronics
(receiver and transmitter) and parts that have come in contact with blood or other bodily
fluids (sensor).
Consult your area’s local waste management authorities for proper disposal instructions.
Taking care of your Dexcom G5 Mobile CGM System is pretty easy. In the next chapter,
traveling with your Dexcom G5 Mobile CGM System, you’ll learn how simple it is to see the
world with your Dexcom G5 Mobile CGM System!
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Chapter 15
Everything Else G5:
On the Go With Dexcom G5 Mobile CGM
System: Getting Through Security
15.1 Introduction
Dexcom G5 Mobile can be a great travel companion; you can go through metal detectors, be
handwanded, and even keep your receiver on during your flight.
This chapter only covers the Dexcom G5 Mobile CGM System. It doesn’t cover steps you need
to take when traveling with your smart device. See your smart device’s instruction for use to
learn how to travel with it.
After this chapter, you will be able to:
1. Explain proper procedure if you prefer a full body pat down.
2. Describe steps needed for a TSA officer to inspect Dexcom G5 Mobile CGM
System components.
3. Identify when your display device(s) can be on during a flight.
4. Contact TSA directly with your security questions.
15.2 Going Through Security
Walk-Through Metal Detectors
Transmitter and Sensor
No worries about wearing your transmitter and sensor when going through security.
Go through walk-in metal detectors or, if you prefer, be handwanded without worrying about
damaging your transmitter or sensor.
If you’re concerned or uncomfortable about walking through the metal detector, the
Transportation Security Administration (TSA) requests you tell the Security Officer you’re
wearing a continuous glucose monitor and want a full-body pat-down with a visual
inspection of your sensor and transmitter.
Let the Security Officer know the sensor can’t be removed because it’s inserted under the skin.
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X-Ray Machines
Receiver, Extra Sensors
Don’t put your Dexcom G5 Mobile CGM System components through x-ray machines.
Before your screening process begins, ask the TSA Officer to perform a visual inspection of
the receiver and your extra sensors. Place all Dexcom G5 Mobile components in a separate
bag before handing over to the Security Officer.
For other medical supplies, such as medications, meters, and strips, check manufacturer’s
instructions or the TSA website.
Body Scanners
Use of AIT body scanners has not been studied and therefore we recommend hand-wanding
or full body pat down and visual inspection in those situations.
In the Plane
You may keep the receiver on:
1. Before take-off
2. While in flight
3. After landing
The Dexcom G5 Mobile CGM System is safe for use on U.S. commercial airlines.
If you choose to use your smart device, the airlines request you put your smart devices
in airplane mode. You can do this, but still keep your Bluetooth on and you will be able to
receive sensor glucose information on your smart device.
Technical Information
The Dexcom G5 Mobile Transmitter is an M-PED with emission levels that meet
RTCA/DO160, Section 21, Category M. Per FAA Advisory, Circular #91-21, 1B,
dated 8/25/06.
Any M-PED that meets this standard in all modes may be used onboard the aircraft without
any further testing by the operator.
This device can withstand exposure to common electrostatic (ESD) and electromagnetic
interference (EMI).
Still Have Questions?
Visit the TSA’s website if you have any questions or concerns at tsa.gov.
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Email: [email protected]
Phone: Call 1.866.289.9673
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Chapter 16
Everything Else G5:
Need Help? You’re Not Alone!
Dexcom has two support teams to help you, each with their own specialty:
• Technical Support Team
• Patient Care Team
16.1 Dexcom Technical Support
Provides replacement units, resolves technical issues or takes product complaints.
Call your Dexcom Technical Support Team, 24 hours a day, 7 days a week, if something is
wrong with your Dexcom G5 Mobile CGM System.
By Phone
Dexcom Technical Support Phone Numbers:
Toll Free: 1.877.339.2664
Toll Call: 1.858.200.0200
By Email
Email: [email protected]
If you prefer to email, to help us help you best, include the following information in your email:
• Name of patient
• Date of Birth
• The technical issue you
• When the problem happened (date and time)
• Patient’s address
• Patient’s phone number
• Item SKU number and description (e.g., name of the device)
• Lot number and/or serial number(s) of affected devices (e.g., sensor)
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What Can They Help Me With?
The Dexcom Technical Support Team helps you with all CGM system related issues as well
as software related issues.
Dexcom Technical Support does not offer medical advice.
16.2 Patient Care Team
The Patient Care Team (PCT) is a group of Certified Diabetes
Educators (CDE®) and Registered Nurses (RNs) offering you customer
care and individualized education services around Dexcom CGM.
Your PCT provides education and support throughout your CGM experience, such as:
• Initial CGM Product Training
• Ongoing Dexcom product education (e.g., how to use a specific feature)
• How to maximize Dexcom CGM use
• Dexcom CGM reporting software and features
• How to review and understand Dexcom CGM reports
By Phone
Available Monday-Friday 5:30 am-8:00 pm PST (subject to change)
Toll Free: 1.877.339.2664
Toll Call: 1.858.200.0200
By Email
Email: [email protected]
If you prefer to email, to help us help you best, include the following information in your email:
• Name
• DOB
• Contact phone number
• Reason for inquiry or education needed
For additional Dexcom CGM education, check the Dexcom website:
dexcom.com/web-based-education
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16.3 Sales Support Team
Inside Sales Support Team
For help with:
• First-time orders
• Re-orders
• Tracking shipments
• Locating a local Dexcom representative
By Phone
Dexcom Inside Sales Support Phone Numbers:
Toll Free: 1.877.339.2664
Toll Call: 1.858.200.0200
By Email
Dexcom Inside Sales Support Email: [email protected]
By Fax
1.877.633.9266
16.4 Corporate
Dexcom Website:
Dexcom.com
Dexcom Address:
6340 Sequence Drive
San Diego, CA 92121
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Chapter 17
Everything Else G5:
Technical Information
17.1 Device Performance Characteristics
NOTE: We recommend that you review the information in this chapter with your healthcare
professional to understand how well the Dexcom G5 Mobile CGM System performs.
The Dexcom G5 Mobile CGM System (the System) uses a glucose sensor to continuously measure and
monitor your glucose levels. The sensor is “calibrated” using a commercially available blood glucose
meter. Once calibrated, the System reports glucose readings up to every 5 minutes. The System was
evaluated clinical studies in which System readings were compared to blood glucose values to assess
its performance and how well the System readings compare to a laboratory test method that measures
blood glucose values. Additionally, subjects performed self-monitoring blood glucose meter tests at
home to assess the System performance in real use environment.
Although the performance characteristics of the System are presented in the following, there is no
commonly accepted statistical approach for capturing performance of continuous glucose monitors
(CGMs), such as the Dexcom G5 Mobile CGM System.
Clinical Study Overview
The System performance was evaluated in four separate prospective clinical studies. Two studies
included adults, and two studies included pediatrics. In the following sections and tables, the studies
will be identified as follows:
Adult Studies (18 years and older)
Original Adult Study: the Receiver included software version SW10050
Software 505 Adult Study: the Receiver included software version SW10505
Pediatric Studies (2 to 17 years)
Original Pediatric Study: the Receiver included software version SW10050
Software 505 Pediatric Study: the Receiver included software version SW10505
The Dexcom G5 Mobile CGM System incorporates the algorithm from software version SW10505 and
has a new software number.
Overview of Adult Studies
The System performance for adults was evaluated in two separate prospective clinical studies:
Original Adult Study (software SW10050) and the Software 505 Adult Study (software SW10505).
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Differences between the studies include the number of subjects enrolled, the number of Systems worn
by each participant, the SMBG meter used, and the number of clinic days each subject participated in
during the study. An overview of each study is provided here.
The Original Adult Study enrolled 72 subjects, and the Software 505 Adult Study enrolled 51
subjects. All subjects had Type 1 or Type 2 diabetes mellitus, and required insulin or oral medication to
manage their diabetes. In the Original Adult Study, 83% of subjects had Type 1 diabetes, and 17% of
subjects had Type 2 diabetes. In the Software 505 Adult Study, 86% of subjects had Type 1 diabetes,
and 14% of subjects had Type 2 diabetes. Both studies included subjects greater than 18 years of age.
Subjects in both studies used the System for seven days. In the Original Adult Study, thirty-six
subjects each wore 2 sensors; in the Software 505 Adult Study, all subjects wore 1 sensor only.
Throughout the 7-day wear period, the sensor was calibrated with an average of 2 fingersticks per
day (approximately once every 12 hours). In the Original Adult Study, subjects used the LifeScan®
OneTouch® Ultra®2 meter and in the Software 505 Adult Study, subjects used Bayer’s CONTOUR®
NEXT USB meter.
In the Original Adult Study, all subjects were evaluated in a controlled clinic environment on all three
clinic days: Day 1, Day 4, and Day 7 of the 7-day wear period. In the Software 505 Adult Study,
subjects were evaluated in one of the three clinic days so there are fewer data samples than in the
Original Adult Study. While using the System in the clinic, subjects had their blood glucose measured
every 15 minutes with a reliable laboratory method, the Yellow Springs Instrument 2300 STAT Plus™
Glucose Analyzer. This instrument is referred to as the “YSI.” Readings from the System were reported
every 5 minutes and paired with YSI values in order to characterize how well the System readings
agreed with laboratory standard blood glucose results. The remainder of the study took place at home,
and the System performance was also paired with the comparative meter results, referred to as the
“SMBG.”
Overview of Pediatric Studies
The System performance for children and adolescents was evaluated in two separate prospective
clinical studies: the Original Pediatric Study (SW10050) and the Software 505 Pediatric Study
(SW10505). Differences between the studies include the number of subjects enrolled, the number of
Systems worn by each participant, the SMBG meter used, the length of time subjects were evaluated
in a controlled clinic environment and whether or not subjects ages 13-17 had their glucose levels
intentionally manipulated during the study. An overview of each study is provided here.
The Original Pediatric Study enrolled 176 subjects, with 16% of subjects younger than 6-years old,
and the Software 505 Pediatric Study enrolled 79 subjects, with 20% of subjects younger than
6-years old. All subjects had Type 1 or Type 2 diabetes mellitus and required insulin or oral medication
to manage their diabetes. In the Original Pediatric Study, about 99% of subjects had Type 1 diabetes
and 1% had Type 2 diabetes. In the Software 505 Pediatric Study, all subjects had Type 1 diabetes.
Sensors were inserted in either the abdomen or upper buttocks.
Subjects in all studies used the System for seven days. In the Original Pediatric Study, all subjects
wore 2 sensors; in the Software 505 Pediatric Study, all subjects wore 1 sensor only. Throughout
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the 7-day wear period, the sensors were calibrated with an average of 2 fingersticks per day
(approximately once every 12 hours), using self-monitoring blood glucose (SMBG) meter values. The
Original Pediatric Study used the LifeScan® OneTouch® Verio® IQ meter; the Software 505 Pediatric
Study used Bayer’s CONTOUR® NEXT USB meter.
All subjects were evaluated in a controlled clinic environment on Day 1, Day 4 or Day 7 of the
7-day wear period. While using the System in the clinic, subjects provided at least two fingerstick
measurements per hour, and subjects ages 6-17 also provided venous blood for comparison to
a laboratory method, the Yellow Springs Instrument 2300 STAT Plus™ Glucose Analyzer. This
instrument is referred to as the “YSI.” In the Original Pediatric Study, subjects’ glucose levels were
not intentionally manipulated during this study; in the Software 505 Pediatric Study, subjects ages
13-17 had their glucose levels intentionally manipulated during the clinic session. Readings from the
System were reported every 5 minutes and paired with YSI values collected every 15 minutes in order
to characterize how well the System readings agreed with laboratory standard blood glucose results.
The remainder of the study took place at home, and the System performance was also paired with the
comparative meter results, referred to as the “SMBG.”
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Table 1-A. System Agreement to YSI within CGM Glucose Ranges (Adult)
CGM
Glucose
Range1
(mg/dL)
Overall
40-60
61-80
81-180
181-300
301-350
351-400
Study2
Number
of Paired
CGM-YSI
Percent
Within
15/15%
YSI
Percent
Within
20/20%
YSI
Percent
Within
30/30%
YSI
Percent
Greater
than
40/40%
YSI
Original
9152
71%
82%
92%
3%
Software 505
2263
86%
93%
98%
1%
Original
512
67%
78%
88%
6%
Software 505
120
89%
94%
98%
0%
Original
781
73%
85%
94%
2%
Software 505
226
91%
96%
99%
0%
Original
3853
67%
78%
91%
3%
Software 505
738
84%
92%
98%
1%
Original
2784
72%
84%
93%
4%
Software 505
798
86%
93%
98%
1%
Original
775
82%
91%
97%
2%
Software 505
229
86%
94%
98%
1%
Original
447
74%
84%
91%
5%
Software 505
152
80%
92%
97%
0%
CGM readings are within 40-400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
2
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Table 1-B. System Agreement to YSI within CGM Glucose Ranges
(Pediatric)
CGM
Glucose
Range1
(mg/dL)
Overall
40-60
61-80
81-180
181-300
301-350
351-400
Study2
Number
of Paired
CGM-YSI
Percent
Within
15/15%
YSI
Percent
Within
20/20%
YSI
Percent
Within
30/30%
YSI
Percent
Greater
than
40/40%
YSI
Original
2922
55%
68%
85%
7%
Software 505
2262
81%
91%
96%
2%
Original
19
63%
74%
79%
21%
Software 505
86
54%
74%
91%
3%
Original
76
61%
82%
92%
4%
Software 505
142
77%
82%
90%
3%
Original
1155
56%
69%
84%
6%
Software 505
805
78%
88%
97%
1%
Original
1380
55%
68%
85%
7%
Software 505
957
89%
96%
99%
1%
Original
206
48%
62%
80%
11%
Software 505
209
81%
91%
94%
5%
Original
86
48%
61%
79%
12%
Software 505
63
64%
81%
83%
8%
CGM readings are within 40-400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
2
Agreement Relative to YSI
Agreement between the System and blood glucose values is characterized using paired System and
YSI values. The System and YSI results were compared by pairing the YSI blood glucose value to a
System glucose reading that occurred immediately after the YSI was collected.
The agreement of the System to blood glucose value was assessed by calculating the percentage
of System readings that were within 15%, 20%, 30% and greater than 40% of the YSI values. For
readings less than or equal to 80 mg/dL the absolute difference in mg/dL between the two glucose
results was calculated. For values greater than 80 mg/dL the absolute percent difference (%) from
the YSI values was calculated. The percentages of total readings within 15 mg/dL or 15%, 20 mg/dL
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or 20%, 30 mg/dL or 30% or greater than 40 mg/dL or 40% are provided in Table 1-A and 1-B. The
tables are categorized within CGM glucose ranges. When you see a CGM reading on your receiver,
this table shows you how likely that reading matches your blood glucose level (measured by YSI in
the study).
For example, in the SW10505 Adult Study (Table 1-A), the total number of data pairs considered in
the analysis was 2263. Of these, 93% of the System readings fall within ± 20 mg/dL of the YSI blood
glucose values ≤ 80 mg/dL and within ± 20% of YSI blood glucose values > 80 mg/dL.
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Table 2-A. Number and Percentage of YSI Values When CGM Readings are
“LOW” or “HIGH” (Adult)
YSI mg/dL
CGM
Readings
Study1
Original
“LOW”
Software
505
CGM-YSI
Pairs
< 55
< 60
< 70
< 80
≥ 80
n
66
84
123
142
13
Cumulative
Percent
42%
54%
79%
92%
8%
n
11
16
17
18
0
Cumulative
Percent
61%
89%
94%
100%
0%
Total
155
18
YSI mg/dL
CGM
Readings
Study1
Original
“HIGH”
Software
505
CGM-YSI
Pairs
> 340
> 320
> 280
> 240
≤ 240
n
189
220
238
246
2
Cumulative
Percent
76%
89%
96%
99%
1%
n
40
43
45
45
0
Cumulative
Percent
89%
96%
100%
100%
0%
Total
248
45
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
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Table 2-B. Number and Percentage of YSI Values When CGM Readings are
“LOW” or “HIGH” (Pediatric)
YSI mg/dL
CGM
Readings
Study1
Original
“LOW”
Software
505
CGM-YSI
Pairs
< 55
< 60
< 70
< 80
≥ 80
n
0
0
0
0
13
Cumulative
Percent
0%
0%
0%
0%
100%
n
3
5
10
15
1
Cumulative
Percent
19%
31%
63%
94%
6%
Total
13
16
YSI mg/dL
CGM
Readings
Study1
Original
“HIGH”
Software
505
CGM-YSI
Pairs
> 340
> 320
> 280
> 240
≤ 240
n
38
51
68
69
1
Cumulative
Percent
54%
73%
97%
99%
1%
n
14
19
22
23
1
Cumulative
Percent
58%
79%
92%
96%
4%
Total
70
24
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
Agreement When CGM Reads “LOW” or “HIGH”
The System reports glucose readings between 40 and 400 mg/dL. When the System determines the
glucose reading is below 40 mg/dL, it displays “LOW” in the Receiver Status Box. When the Dexcom
G5 Mobile System determines that the glucose level is above 400 mg/dL, it displays “HIGH” in the
Receiver Status Box. Because the System does not display glucose values below 40 mg/dL or above
400 mg/dL, the comparisons to the actual blood glucose levels (as determined by the YSI analyzer)
when CGM is classified as “LOW” or “HIGH” are included separately in Table 2-A and 2-B. The tables
include the numbers and the cumulative percentages when YSI values were less than certain glucose
levels (for “LOW”), and when YSI values were greater than certain glucose levels (for “HIGH”).
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For example, in the Software 505 Adult Study (Table 2-A), when the System displayed “LOW” (18
occasions), 100% (18 out of 18) of the YSI values were less than 80 mg/dL, and 94% (17 out of 18) of
the YSI values were less than 70 mg/dL. When the System displayed “HIGH” (45 occasions), 100% (45
out of 45) of the YSI values were greater than 240 mg/dL, and 100% (45 out of 45) of the YSI values
were greater than 280 mg/dL.
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Table 3-A. Concurrence of CGM Readings and YSI Values (Original Adult
Study)
YSI (mg/dL)
Row Percentage of Matched Pairs in each CGM Glucose Range
CGM
(mg/dL)
< 40
4060
6180
81120
121160
161200
201250
251300
301350
351400
>
400
Number
of Paired
CGM-YSI
< 40
6%
48%
37%
7%
1%
0%
0%
0%
0%
0%
0%
155
40-60
4%
49%
36%
11%
1%
0%
0%
0%
0%
0%
0%
512
61-80
0%
22%
51%
24%
1%
0%
0%
0%
0%
0%
0%
781
81-120
0%
2%
17%
66%
13%
1%
0%
0%
0%
0%
0%
1706
121-160
0%
0%
1%
25%
60%
13%
2%
0%
0%
0%
0%
1492
161-200
0%
0%
0%
2%
28%
53%
16%
2%
0%
0%
0%
1240
201- 250
0%
0%
0%
0%
3%
21%
51%
21%
3%
1%
0%
1181
251- 300
0%
0%
0%
0%
0%
4%
19%
49%
24%
3%
0%
1018
301- 350
0%
0%
0%
0%
0%
0%
3%
28%
51%
16%
1%
775
351- 400
0%
0%
0%
0%
0%
0%
3%
10%
43%
38%
7%
447
> 400
0%
0%
0%
0%
0%
0%
1%
6%
21%
57%
15%
248
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Table 3-B. Concurrence of CGM Readings and YSI Values (Software 505
Adult Study)
YSI (mg/dL)
Row Percentage of Matched Pairs in each CGM Glucose Range
CGM
(mg/dL)
< 40
4060
6180
81120
121160
161200
201250
251300
301350
351400
>
400
Number
of Paired
CGM-YSI
< 40
6%
83%
11%
0%
0%
0%
0%
0%
0%
0%
0%
18
40-60
2%
74%
22%
3%
0%
0%
0%
0%
0%
0%
0%
120
61-80
0%
19%
68%
13%
0%
0%
0%
0%
0%
0%
0%
226
81-120
0%
0%
19%
72%
8%
1%
0%
0%
0%
0%
0%
347
121-160
0%
0%
0%
17%
72%
11%
0%
0%
0%
0%
0%
246
161-200
0%
0%
0%
0%
25%
59%
16%
0%
0%
0%
0%
286
201- 250
0%
0%
0%
0%
0%
16%
70%
13%
1%
0%
0%
376
251- 300
0%
0%
0%
0%
0%
2%
16%
61%
14%
7%
0%
281
301- 350
0%
0%
0%
0%
0%
0%
2%
28%
59%
10%
1%
229
351- 400
0%
0%
0%
0%
0%
0%
0%
4%
47%
45%
5%
152
> 400
0%
0%
0%
0%
0%
0%
0%
0%
20%
38%
42%
45
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Table 3-C. Concurrence of CGM Readings and YSI Values (Original
Pediatric Study)
YSI (mg/dL)
Row Percentage of Matched Pairs in each CGM Glucose Range
CGM
(mg/dL)
< 40
4060
6180
81120
121160
161200
201250
251300
301350
351400
>
400
Number
of Paired
CGM-YSI
< 40
0%
0%
0%
54%
31%
15%
0%
0%
0%
0%
0%
13
40-60
0%
21%
58%
16%
5%
0%
0%
0%
0%
0%
0%
19
61-80
0%
21%
45%
30%
4%
0%
0%
0%
0%
0%
0%
76
81-120
0%
1%
20%
66%
12%
1%
0%
0%
0%
0%
0%
338
121-160
0%
0%
1%
36%
54%
7%
1%
0%
0%
0%
0%
511
161-200
0%
0%
0%
4%
40%
48%
6%
1%
0%
0%
0%
596
201- 250
0%
0%
0%
1%
9%
44%
41%
5%
0%
0%
0%
658
251- 300
0%
0%
0%
0%
2%
7%
50%
36%
3%
0%
2%
432
301- 350
0%
0%
0%
0%
0%
2%
18%
59%
21%
0%
0%
206
351- 400
0%
0%
0%
0%
0%
0%
3%
28%
50%
16%
2%
86
> 400
0%
0%
0%
0%
0%
0%
1%
14%
41%
36%
7%
70
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Table 3-D. Concurrence of CGM Readings and YSI Values (Software 505
Pediatric Study)
YSI (mg/dL)
Row Percentage of Matched Pairs in each CGM Glucose Range
CGM
(mg/dL)
< 40
4060
6180
81120
121160
161200
201250
251300
301350
351400
>
400
Number
of Paired
CGM-YSI
< 40
6%
25%
63%
6%
0%
0%
0%
0%
0%
0%
0%
16
40-60
0%
33%
60%
6%
1%
0%
0%
0%
0%
0%
0%
86
61-80
0%
8%
64%
26%
2%
0%
0%
0%
0%
0%
0%
142
81-120
0%
1%
15%
69%
13%
1%
1%
0%
0%
0%
0%
314
121-160
0%
0%
0%
15%
66%
18%
1%
0%
0%
0%
0%
313
161-200
0%
0%
0%
1%
18%
66%
15%
0%
0%
0%
0%
355
201- 250
0%
0%
0%
0%
1%
17%
68%
14%
0%
0%
0%
444
251- 300
0%
0%
0%
0%
0%
0%
26%
58%
16%
0%
0%
336
301- 350
0%
0%
0%
0%
0%
0%
4%
40%
46%
9%
0%
209
351- 400
0%
0%
0%
0%
0%
0%
3%
14%
62%
21%
0%
63
> 400
0%
0%
0%
0%
0%
0%
4%
13%
29%
38%
17%
24
Concurrence of System and Laboratory Reference
Table 3-A (Original Adult Study), 3-B (Software 505 Adult Study), 3-C (Original Pediatric Study)
and 3-D (Software 505 Pediatric Study) are categorized by ranges of CGM glucose readings. These
tables describe, for each range of CGM glucose readings, what percentage of paired YSI values were in
the same glucose range (shaded) or in glucose ranges above and below the paired CGM readings. For
example, based on the Software 505 Adult Study, when CGM readings are within 81 to 120 mg/dL,
you can expect your blood glucose levels are within 81 to 120 mg/dL 72% of time.
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Table 4-A. System Difference to YSI within CGM Glucose Ranges (Adult)
CGM
Glucose
Range1
(mg/dL)
Overall
*40-60
*61-80
81-180
181-300
301-350
351-400
Study2
Number
of Paired
CGM-YSI
Mean
Percent
Difference
Median
Percent
Difference
Mean
Absolute
Percent
Difference
Median
Absolute
Percent
Difference
Original
9152
2.9%
1.7%
13.3%
9.8%
Software 505
2263
2.5%
2.4%
9.0%
7.0%
Original
512
-10.0
-8.2
13.5
9.7
Software 505
120
-3.3
-2.1
6.9
4.8
Original
781
-2.4
-0.4
11.4
8.6
Software 505
226
0.8
1.4
6.7
5.4
Original
3853
4.8%
3.0%
13.8%
9.8%
Software 505
738
3.9%
4.1%
9.6%
8.2%
Original
2784
2.1%
0.0%
11.9%
9.2%
Software 505
798
0.6%
0.4%
8.0%
6.1%
Original
775
3.8%
2.8%
9.8%
7.9%
Software 505
229
4.1%
3.4%
8.0%
5.8%
Original
447
10.4%
7.7%
12.8%
9.1%
Software 505
152
7.2%
6.3%
9.2%
7.2%
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
*For CGM ≤ 80 mg/dL, the difference and absolute difference in mg/dL are included instead of percent
differences (%).
1
2
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Table 4-B. System Difference to YSI within CGM Glucose Ranges
(Pediatric)
CGM
Glucose
Range1
(mg/dL)
Overall
*40-60
*61-80
81-180
181-300
301-350
351-400
Study
Number
of Paired
CGM-YSI
Mean
Percent
Difference
Median
Percent
Difference
2
Mean
Absolute
Percent
Difference
Median
Absolute
Percent
Difference
Original
2922
13.5%
11.6%
17.4%
13.5%
Software 505
2262
1.8%
1.2%
10.4%
7.9%
Original
19
-18.1
-9.1
19.2
9.1
Software 505
86
-15.3
-13.2
16.1
13.2
Original
76
-3.7
-2.3
13.4
10.6
Software 505
142
-4.8
-1.0
11.8
7.7
Original
1155
11.9%
9.7%
17.0%
13.0%
Software 505
805
1.9%
0.7%
10.6%
8.1%
Original
1380
14.8%
12.4%
17.4%
13.3%
Software 505
957
2.2%
1.0%
8.1%
6.5%
Original
206
19.2%
15.9%
19.4%
15.9%
Software 505
209
7.8%
6.5%
11.0%
7.9%
Original
86
18.5%
15.5%
19.1%
15.5%
Software 505
63
14.9%
11.6%
15.2%
11.6%
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
*For CGM ≤ 80 mg/dL, the difference and absolute difference in mg/dL are included instead of percent
differences (%).
1
2
Accuracy Relative to YSI
Accuracy between matched pairs was also estimated by calculating the percent difference between
the System reading and the YSI value. For example, if the YSI value is 100 mg/dL and the System
reading is 90 mg/dL, a 10% difference between the System and the YSI is reported. The System and
YSI values were compared by pairing the System reading that fell immediately after the YSI value
was collected.
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In the example above, the System reading is less than the YSI value, so the percent difference reading
is negative. The mean percent difference is the average of all positive and negative percent differences
between the two devices; it tells you if the System reads higher or lower on average than the YSI
within each glucose range.
Another estimate used to show the accuracy of the System is the absolute percent difference. The
absolute percent difference tells you the percent difference or “distance” between the System and YSI
values, but does not tell you whether the System is reading, on average, higher or lower than the YSI
laboratory standard. The mean absolute percent difference is the average “distance” (regardless if
positive or negative) between System readings and YSI values.
Accuracy measures in differences for both the Original Adult and Software 505 Adult Studies are
summarized in Table 4-A. Accuracy measures in differences for both the Original Pediatric and
Software 505 Pediatric Studies are summarized in Table 4-B. Table 4-A and 4-B are categorized
within CGM glucose ranges.
For example, in the Software 505 Adult Study (Table 4-A), overall, on average, the System reads
2.5% different (Mean Percent Difference) than the reference and 9.0% absolute different (Mean
Absolute Difference) than the reference values. The Median Percent Difference shows that half of
the time the System reads 2.4% or less than the YSI blood glucose values and the Median Absolute
Percent Difference shows that half of the time the System reads about 7.0% or less than the YSI blood
glucose values.
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Table 5-A. Hypoglycemia Alert and Detection Rate Evaluation in
Reference to YSI 15 Minutes Before and After (Adult)
Hypoglycemia
Alert Level
(mg/dL)
55
60
70
80
90
Study1
True
Alert
Rate
False
Alert
Rate
Original
50%
Software 505
71%
Hypoglycemia
Detection Rate
Hypoglycemia
Missed
Detection Rate
50%
71%
29%
29%
68%
32%
Original
64%
36%
75%
25%
Software 505
85%
15%
83%
17%
Original
79%
21%
83%
17%
Software 505
92%
8%
91%
9%
Original
87%
13%
86%
14%
Software 505
95%
5%
90%
10%
Original
90%
10%
89%
11%
Software 505
96%
4%
94%
6%
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
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Table 5-B. Hypoglycemia Alert and Detection Rate Evaluation in
Reference to YSI 15 Minutes Before and After (Pediatric, Ages 6-17 Years)
Hypoglycemia
Alert Level
(mg/dL)
55
60
70
80
90
100
Study1
True
Alert
Rate
False
Alert
Rate
Hypoglycemia
Detection Rate
Hypoglycemia
Missed
Detection Rate
Original
0%
100%
0%
100%
Software 505
22%
78%
75%
25%
Original
11%
89%
25%
75%
Software 505
42%
58%
78%
23%
Original
47%
53%
50%
50%
Software 505
68%
32%
75%
25%
Original
55%
45%
55%
45%
Software 505
86%
14%
91%
9%
Original
69%
31%
62%
38%
Software 505
90%
10%
93%
7%
Original
75%
25%
62%
38%
Software 505
91%
9%
93%
7%
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
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Table 5-C. Hypoglycemia Alert and Detection Rate Evaluation in
Reference to SMBG 30 Minutes Before and After (Pediatric, Ages 2-5
Years)
Hypoglycemia
Alert Level
(mg/dL)
55
60
70
80
90
100
Study1
True
Alert
Rate
False
Alert
Rate
Hypoglycemia
Detection Rate
Hypoglycemia
Missed
Detection Rate
Original
3%
97%
57%
43%
Software 505
25%
75%
100%
0%
Original
11%
89%
62%
38%
Software 505
20%
80%
100%
0%
Original
29%
71%
77%
23%
Software 505
20%
80%
100%
0%
Original
35%
65%
85%
15%
Software 505
61%
39%
100%
0%
Original
51%
49%
89%
11%
Software 505
78%
22%
100%
0%
Original
64%
36%
91%
9%
Software 505
82%
18%
100%
0%
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
Low and High Glucose Alerts
The ability of the System to detect high and low glucose levels is assessed by comparing System
results to YSI results at low and high blood glucose levels and determining if the alert may have
sounded. The System and YSI values were compared by pairing the System reading that occurred
immediately after the YSI value was collected. We suggest that you ask your doctor what alert settings
would be best for you.
The Low Glucose Alert
Estimates of how well the adjustable Low Glucose Alert performs are presented in Table 5-A, 5-B and
5-C. Table 5-A represents the hypoglycemia alert evaluation within 15 minutes of the YSI value in the
adult studies. Table 5-B represents the alert evaluation within 15 minutes of the YSI value for a subset
of the pediatric population—subjects age 6 to 17 years who had YSI measurements every 15 minutes.
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Table 5-C represents the alert evaluation within 30 minutes of an SMBG reading for 2- to 5-year old
subjects in the pediatric studies.
Hypoglycemia Alert Rate
The Alert Rate shows how often the alert is right or wrong. The True Alert Rate is the % of time
the device alarmed when the blood glucose level was at or below the alert setting within 15 or 30
minutes before or after the device alarmed. The False Alert Rate is the % of time the device alarmed
when the blood glucose level was above the alert setting within 15 or 30 minutes before or after the
device alarmed.
For example, if you set the Low Glucose Alert to 70 mg/dL and your alarm sounds, how often can you
expect your blood sugar to actually be low? In the Software 505 Adult Study (Table 5-A), when your
alarm sounds, you can expect your blood sugar to be below 70 mg/dL approximately 92% of the time
and above 70 mg/dL approximately 8% of the time within the 15 minute period before or after your
alarm sounds.
Hypoglycemia Detection Rate
The Detection Rate shows how often the device recognizes and alerts you to an episode of
hypoglycemia or how often it misses such an event. The Hypoglycemia Detection Rate is the % of
time the blood glucose level was at or below the alert setting and device alarmed within 15 or 30
minutes before or after the blood glucose was at or below the alert settings. The Hypoglycemia Missed
Detection Rate is the % of time the blood glucose was at or below the alert setting, but the device did
not alarm within 15 or 30 minutes before or after the blood glucose was at or below the alert setting.
For example, if you set the Low Glucose alert to 70 mg/dL, how often will your alarm alert you if your
blood glucose goes below 70 mg/dL? In the Software 505 Adult Study (Table 5-A), when your blood
sugar goes below 70 mg/dL, you can expect your alarm to sound 91% of the time and not to sound
approximately 9% of time within the 15 minute period before or after your blood sugar goes below
70 mg/dL.
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Table 6-A. Hyperglycemia Alert and Detection Rate Evaluation in
Reference to YSI 15 Minutes Before and After (Adult)
Hyperglycemia
Alert Level
(mg/dL)
120
140
180
200
220
240
300
Study1
True
Alert
Rate
False
Alert
Rate
Hyperglycemia
Detection Rate
Hyperglycemia
Missed
Detection Rate
Original
95%
5%
98%
2%
Software 505
98%
2%
100%
0%
Original
94%
6%
97%
3%
Software 505
97%
3%
99%
1%
Original
92%
8%
97%
3%
Software 505
97%
3%
99%
1%
Original
92%
8%
97%
3%
Software 505
96%
4%
98%
2%
Original
91%
9%
95%
5%
Software 505
94%
6%
98%
2%
Original
91%
9%
94%
6%
Software 505
93%
7%
95%
5%
Original
82%
18%
86%
14%
Software 505
86%
14%
90%
10%
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
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Table 6-B. Hyperglycemia Alert and Detection Rate Evaluation in
Reference to YSI 15 Minutes Before and After (Pediatric, Ages 6-17 Years)
Hyperglycemia
Alert Level
(mg/dL)
120
140
180
200
220
240
300
Study1
True
Alert
Rate
False
Alert
Rate
Hyperglycemia
Detection Rate
Hyperglycemia
Missed
Detection Rate
Original
91%
9%
98%
2%
Software 505
98%
2%
99%
1%
Original
87%
13%
99%
1%
Software 505
97%
3%
98%
2%
Original
75%
25%
99%
1%
Software 505
94%
6%
98%
2%
Original
71%
29%
98%
2%
Software 505
94%
6%
97%
3%
Original
67%
33%
97%
3%
Software 505
93%
7%
96%
4%
Original
62%
38%
96%
4%
Software 505
88%
12%
94%
6%
Original
43%
57%
93%
7%
Software 505
69%
31%
84%
16%
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
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Table 6-C. Hyperglycemia Alert and Detection Rate Evaluation in
Reference to SMBG 30 Minutes Before and After (Pediatric, Ages 2-5
Years)
Hyperglycemia
Alert Level
(mg/dL)
120
140
180
200
220
240
300
Study1
True
Alert
Rate
False
Alert
Rate
Hyperglycemia
Detection Rate
Hyperglycemia
Missed
Detection Rate
Original
92%
8%
98%
2%
Software 505
97%
3%
99%
1%
Original
90%
10%
98%
2%
Software 505
98%
2%
100%
0%
Original
87%
13%
96%
4%
Software 505
99%
1%
93%
7%
Original
85%
15%
96%
4%
Software 505
98%
2%
93%
7%
Original
81%
19%
95%
5%
Software 505
100%
0%
97%
3%
Original
80%
20%
95%
5%
Software 505
99%
1%
98%
2%
Original
71%
29%
90%
10%
Software 505
95%
5%
96%
4%
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
The High Glucose Alert
Estimates of how well the adjustable High Glucose Alert performs are presented in Table 6-A, 6-B and
6-C. Table 6-A represents the hyperglycemia alert evaluation within 15 minutes of the YSI value in the
adult studies. Table 6-B represents the alert evaluation within 15 minutes of the YSI value for a subset
of the pediatric population—subjects age 6 to 17 years who had YSI measurements every 15 minutes.
Table 6-C represents the alert evaluation within 30 minutes of an SMBG reading for 2- to 5-year old
subjects in the pediatric studies.
Hyperglycemia Alert Rate
The Alert Rate shows how often the alert is right or wrong. The True Alert Rate is the % of time
the device alarmed when the blood glucose level was at or above the alert setting within 15 or 30
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minutes before or after the device alarmed. The False Alert Rate is the % of time the device alarmed
when the blood glucose level was below the alert setting within 15 or 30 minutes before or after the
device alarmed.
For example, if you set the High Glucose alert to 200 mg/dL and your alarm sounds, how often can you
expect your blood sugar to actually be high? In the Software 505 Adult Study (Table 6-A), when your
alarm sounds, you can expect your blood sugar to be at or above 200 mg/dL approximately 96% of the
time and not be above 200 mg/dL approximately 4% of the time within the 15 minute period before or
after your alarm sounds.
Hyperglycemia Detection Rate
The Detection Rate shows how often the device recognizes and alerts you to an episode of
hyperglycemia or how often it misses such an event. The Hyperglycemia Detection Rate is the % of
time the blood glucose level was at or above the alert setting and the device alarmed within 15 or
30 minutes before or after the blood glucose was at or above the alert settings. The Hyperglycemia
Missed Detection Rate is the % of time the blood glucose was at or above the alert setting, but the
device did not alarm within 15 or 30 minutes before or after the blood glucose was at or above the
alert setting.
For example, if you set your High Glucose alert to 200 mg/dL, how often will your alarm alert you if
your blood glucose goes at or above 200 mg/dL? In the Software 505 Adult Study (Table 6-A), when
your blood sugar goes above 200 mg/dL, you can expect your alarm to sound 98% of the time and not
to sound approximately 2% of time within the 15 minute period before or after your blood sugar goes
above 200 mg/dL.
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Table 7-A. Percentage of System Readings1 within YSI Values With Data
Stratified in 2-Hour Increments After Calibration (Adult)
Time from
Calibration
0-2 hours
2-4 hours
4-6 hours
6-8 hours
8-10 hours
10-12 hours
12-14 hours
Study2
Number
of Paired
CGM-YSI
Percent
Within
15/15%
YSI
Percent
Within
20/20%
YSI
Percent
Within
30/30%
YSI
Percent
Greater
than
40/40%
YSI
Original
1929
78%
88%
96%
2%
Software 505
469
93%
97%
99%
0%
Original
1516
69%
81%
91%
4%
Software 505
389
90%
97%
99%
0%
Original
1547
69%
79%
91%
5%
Software 505
383
85%
91%
97%
2%
Original
1520
68%
79%
92%
3%
Software 505
380
79%
90%
97%
2%
Original
1555
71%
82%
92%
4%
Software 505
347
83%
92%
98%
0%
Original
1068
65%
77%
91%
4%
Software 505
295
80%
90%
98%
0%
Original
17
65%
76%
82%
12%
Software 505
0
--
--
--
--
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
2
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Table 7-B. Percentage of System Readings1 within YSI Values with Data
Stratified in 2-Hour Increments after Calibration (Pediatric)
Time from
Calibration
0-2 hours
2-4 hours
4-6 hours
6-8 hours
8-10 hours
10-12 hours
12-14 hours
Study
Number
of paired
CGM-YSI
Percent
within
15/15%
YSI
Percent
within
20/20%
YSI
Percent
within
30/30%
YSI
Percent
greater
than
40/40%
YSI
Original
648
65%
75%
87%
7%
Software 505
545
83%
91%
97%
1%
2
Original
649
51%
67%
86%
7%
Software 505
460
72%
89%
96%
2%
Original
630
51%
61%
80%
10%
Software 505
428
77%
88%
95%
2%
Original
409
52%
68%
85%
5%
Software 505
325
88%
92%
94%
3%
Original
296
53%
69%
84%
7%
Software 505
305
86%
93%
97%
1%
Original
253
58%
74%
89%
5%
Software 505
198
89%
94%
98%
0%
Original
37
32%
38%
65%
22%
Software 505
1
100%
100%
100%
100%
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
2
Calibration Stability
The System must be calibrated every 12 hours. To demonstrate performance of the System over a
12-hour calibration period, Systems were evaluated to verify that performance remains consistent
over the 12-hour calibration period. Systems were evaluated in 2-hour increments after calibration.
Performance was estimated at each 2-hour interval and stratified by glucose values by calculating
the percentage of System readings within 15 mg/dL or 15%, 20 mg/dL or 20%, 30 mg/dL or 30%, 40
mg/dL or 40% and greater than 40 mg/dL or 40% of the YSI values in Table 7-A and 7-B.
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Table 8-A. Sensor Stability Relative to YSI (Accuracy Over Time1) - (Adult)
Day
of
Wear
Day
1
Day
4
Day
7
Study2
Number
of
Paired
CGMYSI
Mean
Absolute
Percent
Differences
Median
Absolute
Percent
Differences
Percent
Within
15/15%
YSI
Percent
Within
20/20%
YSI
Percent
Within
30/30%
YSI
Percent
Greater
than
40/40%
YSI
Original
3023
16.7%
13.2%
59%
71%
86%
6%
Software 505
680
10.7%
7.9%
77%
84%
96%
2%
Original
3108
11.4%
8.2%
77%
87%
95%
2%
Software 505
777
8.0%
6.4%
89%
96%
99%
0%
Original
3021
11.9%
8.9%
76%
87%
95%
2%
Software
505
806
8.5%
7.2%
90%
97%
99%
0%
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
2
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Table 8-B. Sensor Stability Relative to YSI (Accuracy Over Time1) (Pediatric, Ages 6-17 Years)
Day
of
Wear
Day
1
Day
4
Day
7
Study2
Number
of
Paired
CGMYSI
Mean
Absolute
Percent
Differences
Median
Absolute
Percent
Differences
Percent
Within
15/15%
YSI
Percent
Within
20/20%
YSI
Percent
Within
30/30%
YSI
Percent
Greater
than
40/40%
YSI
Original
1016
21.2%
15.8%
48%
61%
78%
15%
Software 505
740
12.7%
8.5%
75%
83%
91%
4%
Original
810
16.0%
13.9%
52%
66%
87%
3%
Software 505
795
8.1%
6.7%
89%
97%
100%
0%
Original
1096
15.1%
11.3%
63%
76%
89%
4%
Software
505
727
10.4%
8.4%
80%
91%
98%
1%
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
2
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Table 8-C. Sensor Stability Relative to SMBG (Accuracy Over Time1) (Pediatric, Ages 2-17 Years)
Day
of
Wear
Day
1
Day
2
Day
3
Study2
Number
of
Paired
CGMSMBG
Mean
Absolute
Percent
Differences
Median
Absolute
Percent
Differences
Percent
Within
15/15%
SMBG
Percent
Within
20/20%
SMBG
Percent
Within
30/30%
SMBG
Percent
Greater
than
40/40%
SMBG
Original
3216
18.8%
14.2%
53%
65%
81%
10%
Software 505
893
14.8%
10.7%
64%
79%
91%
5%
Original
2148
16.2%
12.4%
60%
74%
87%
6%
Software 505
436
13.2%
10.4%
69%
81%
95%
3%
Original
1977
15.2%
11.0%
63%
76%
89%
5%
Software 505
441
13.8%
11.3%
66%
77%
91%
2%
Day
4
Original
2830
14.0%
10.9%
66%
79%
91%
4%
Software 505
850
10.7%
8.5%
79%
91%
97%
1%
Day
5
Original
1768
15.4%
10.7%
67%
78%
90%
5%
Software 505
374
11.4%
8.7%
74%
86%
96%
1%
Day
6
Original
1704
14.3%
9.8%
68%
79%
90%
4%
Software 505
410
12.3%
9.2%
72%
80%
93%
2%
Original
2675
12.4%
9.2%
72%
83%
94%
3%
Software 505
860
11.3%
8.6%
79%
90%
96%
2%
Day
7
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
2
Sensor Stability
Relative to YSI
Sensors can be worn for up to 7 days. Performance was estimated by calculating the percentage of
System readings within 15 mg/dL or 15%, 20 mg/dL or 20%, 30 mg/dL or 30% , 40 mg/dL or 40%
and greater than 40 mg/dL or 40% of the YSI values at the beginning (Day 1), middle (Day 4) and
end (Day 7) of the System lifecycle. The average and median of the absolute percent differences are
included in Table 8-A and 8-B showing consistent accuracy and sensor stability over the 7-day life of
the sensor.
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Relative to SMBG (Pediatric Study)
Performance was also estimated by calculating the percentage of system readings within various
percentages of the SMBG values at each day of the sensor wear period (Table 8-C). The average and
median of the absolute percent differences are included in the table.
Precision of System Readings
A subset of subjects wore two Systems at the same time. This was to look at how similarly two
Systems function on the same subject (sensor precision). Precision was evaluated by comparing the
glucose readings from the two Systems worn on the same subject at the same time.
In the Original Adult Study, 36 subjects wore two Systems. Results showed that System readings
from the two sensors generally agreed with each other within 9% (absolute percent difference) with
a 7% coefficient of variation. In the Original Pediatric Study, all subjects wore two Systems. Results
showed that System readings from the two sensors generally agreed with each other within 10%
(absolute percent difference) with a 7% coefficient of variation. Only one System was worn in the
Software 505 Adult and Software 505 Pediatric Studies so precision data was not collected.
Sensor Life
Sensors may be worn for up to 7 days (168 hours). To estimate how long a sensor will work over
7 days, all sensors worn were evaluated to determine how many days/hours of readings each
sensor provided.
In the Original Adult Study, 108 sensors were evaluated. Ninety-four percent (94%) of the sensors
lasted until Day 7 (145-168 hours). There were 6 (6%) sensors that ended early, four of which lasted
more than 3 days.
In the Software 505 Adult Study, 51 sensors were evaluated. Ninety-eight percent (98%) of the
sensors lasted until Day 7 (145-168 hours). There was 1 (2%) sensor that ended early, which lasted
until day 5 of the sensor wear.
In the Original Pediatric Study, 351 sensors were evaluated. Eighty-five percent (85%) of the sensors
lasted until Day 7 (145-168 hours).
In the Software 505 Pediatric Study, 77 sensors were evaluated. Ninety-four percent (94%) of the
sensors lasted until Day 7 (145-168 hours).
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Table 9-A. Number of Readings Provided by Each Sensor Over 7-Days
(Adult)
% of Total Possible
Readings Provided
0-25%
26-50%
51-75%
76-100%
Study1
Total Readings
Provided
(Min-Max)
Original
167-491
2%
Software 505
0
0%
% of Systems Providing
That Number of Readings
Original
719-914
4%
Software 505
856-856
2%
Original
1267-1267
1%
Software 505
1253-1253
2%
Original
1811-1992
94%
Software 505
1497-1992
96%
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
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Table 9-B. Number of Readings Provided by Each Sensor Over 7-Days
(Pediatric)
% of Total Possible
Readings Provided
0-25%
26-50%
51-75%
76-100%
Study1
Total Readings
Provided
(Min-Max)
% of Systems Providing
That Number of Readings
Original
103-427
3%
Software 505
60-223
4%
Original
569-954
3%
Software 505
877-891
3%
Original
1006-1484
9%
Software 505
1131-1342
3%
Original
1518-1992
86%
Software 505
1623-1990
91%
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
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Table 10-A. System Readings Within Wear Days (Adult)
Statistic
Mean
Median
Standard
Deviation
Study1
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
All
Days2
Original
98%
98%
98%
98%
97%
99%
95%
97%
Software 505
98%
99%
98%
98%
96%
99%
97%
98%
Original
100%
100%
100%
100%
100%
100%
100%
100%
Software 505
99%
100%
100%
100%
100%
100%
100%
100%
Original
5%
3%
9%
8%
10%
3%
11%
8%
Software 505
3%
2%
8%
11%
15%
2%
13%
9%
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
2
A total of 108 sensors were included with the Original Study and 51 sensors were included with the
Software 505 Study.
1
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Table 10-B. System Readings within Wear Days (Pediatric)
Statistic
Mean
Median
Standard
Deviation
Study1
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
All
Days2
Original
97%
96%
96%
95%
94%
94%
92%
95%
Software 505
96%
96%
95%
96%
93%
95%
93%
95%
Original
99%
99%
99%
99%
99%
99%
98%
99%
Software 505
99%
98%
99%
99%
97%
97%
98%
98%
Original
6%
10%
9%
12%
14%
14%
17%
12%
Software 505
9%
6%
12%
10%
15%
7%
12%
11%
1
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
2
A total of 108 sensors were included with the Original Study and 77 sensors were included with the
Software 505 Study.
Number of Readings Provided
The System is capable of providing a reading up to every 5 minutes, or up to 288 readings per day. For
a variety of reasons, the System may not display a glucose reading and readings are “skipped.” Table
9-A and 9-B estimate the number of readings you can expect to receive from the System over the
entire 7-day period after calibration. Table 10-A and 10-B show the number of readings you can expect
to receive from the System within each system wear day.
For the Software 505 Adult Study (SW10505), 96% of Systems provided between 1,497 and 1,992
valid glucose readings (or more than 75% of the expected number of readings) as seen in Table 9-A.
Adjusted within each system wear-day, the System in the Software 505 Adult Study provided an
average of 98% of all expected glucose readings (288) as seen in Table 10-A.
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Table 11-A. System Agreement to SMBG Within CGM Glucose Ranges
(Adult)
CGM
Glucose
Range1
(mg/dL)
Overall
40-60
61-80
81-180
181-300
301-350
351-400
Study2
Number
of Paired
CGM-SMBG
Percent
Within
15/15%
SMBG
Percent
Within
20/20%
SMBG
Percent
Within
30/30%
SMBG
Percent
Greater
than
40/40%
SMBG
Original
7508
69%
81%
94%
2%
Software 505
2992
77%
87%
96%
1%
Original
731
75%
84%
92%
4%
Software 505
221
73%
80%
87%
7%
Original
968
78%
86%
95%
1%
Software 505
336
77%
85%
95%
1%
Original
3141
65%
78%
93%
2%
Software 505
1362
74%
85%
96%
1%
Original
1960
68%
81%
94%
3%
Software 505
826
80%
90%
97%
1%
Original
450
77%
88%
98%
1%
Software 505
161
83%
93%
99%
0%
Original
258
75%
85%
95%
2%
Software 505
86
90%
93%
98%
1%
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
2
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Table 11-B. System Agreement to SMBG Within CGM Glucose Ranges
(Pediatric)
CGM
Glucose
Range1
(mg/dL)
Overall
40-60
61-80
81-180
181-300
301-350
351-400
Study
Number
of Paired
CGM-SMBG
Percent
Within
15/15%
SMBG
Percent
Within
20/20%
SMBG
Percent
Within
30/30%
SMBG
Percent
Greater
than
40/40%
SMBG
Original
16318
64%
76%
89%
5%
Software 505
4264
73%
84%
94%
2%
2
Original
487
44%
55%
68%
19%
Software 505
240
54%
71%
86%
7%
Original
1340
59%
70%
85%
7%
Software 505
399
64%
76%
92%
2%
Original
7084
62%
74%
90%
5%
Software 505
1650
72%
84%
95%
2%
Original
5627
69%
80%
90%
5%
Software 505
1526
79%
89%
97%
2%
Original
1176
65%
77%
90%
4%
Software 505
319
72%
83%
94%
2%
Original
604
58%
72%
86%
6%
Software 505
130
69%
79%
86%
8%
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
1
2
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Table 12-A. System Difference to SMBG Within CGM Glucose Ranges
(Adult)
CGM
Glucose
Range1
(mg/dL)
Overall
*40-60
*61-80
81-180
181-300
301-350
351-400
Study2
Number
of Paired
CGM-SMBG
Mean
Percent
Difference
Median
Percent
Difference
Mean
Absolute
Percent
Difference
Median
Absolute
Percent
Difference
Original
7508
-0.4%
-1.4%
14.0%
11.0%
Software 505
2992
-2.6%
-2.7%
11.3%
8.6%
Original
731
-9.3
-8.0
11.7
8.0
Software 505
221
-10.3
-6.0
13.0
8.0
Original
968
-1.0
1.0
10.7
8.0
Software 505
336
-4.0
-2.0
10.1
7.0
Original
3141
1.4%
0.0%
14.2%
11.0%
Software 505
1362
-2.6%
-3.1%
11.4%
8.9%
Original
1960
-0.7%
-2.8%
13.0%
10.3%
Software 505
826
-1.4%
-2.0%
9.5%
7.4%
Original
450
-0.7%
-2.6%
10.5%
8.6%
Software 505
161
-0.0%
0.0%
8.3%
6.0%
Original
258
5.0%
3.0%
11.9%
8.6%
Software 505
86
3.9%
3.2%
8.1%
6.7%
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
*For CGM ≤ 80 mg/dL, the differences in mg/dL are included instead of percent differences (%).
1
2
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Table 12-B. System Difference to SMBG Within CGM Glucose Ranges
(Pediatric)
CGM
Glucose
Range1
(mg/dL)
Overall
*40-60
*61-80
81-180
181-300
301-350
351-400
Study2
Number
of Paired
CGM-SMBG
Mean
Percent
Difference
Median
Percent
Difference
Mean
Absolute
Percent
Difference
Median
Absolute
Percent
Difference
Original
16318
2.2%
0.9%
15.3%
11.1%
Software 505
4264
-0.7%
-1.1%
12.5%
9.5%
Original
487
-22.1
-17.0
23.9
18.0
Software 505
240
-15.9
-14.0
16.9
14.0
Original
1340
-11.8
-8.0
17.0
11.0
Software 505
399
-7.8
-6.0
13.7
10.0
Original
7084
1.1%
-1.0%
15.4%
11.4%
Software 505
1650
-1.2%
-2.6%
12.1%
9.5%
Original
5627
5.7%
3.4%
13.5%
9.5%
Software 505
1526
1.7%
0.9%
10.1%
7.7%
Original
1176
9.6%
7.2%
14.2%
10.4%
Software 505
319
6.7%
5.9%
11.8%
8.9%
Original
604
12.7%
10.2%
16.1%
11.9%
Software 505
130
12.0%
8.9%
15.7%
10.6%
CGM readings are within 40 to 400 mg/dL, inclusive.
Both sets of study data are presented and are labeled as Original (SW10050) or Software 505
(SW10505).
*For CGM ≤ 80 mg/dL, the differences in mg/dL are included instead of percent differences (%).
1
2
Agreement and Accuracy Relative to SMBG
Agreement between the System and blood glucose values is also characterized using paired System
and SMBG results (Table 11 to 12). The System and SMBG values were compared by pairing the
comparative SMBG value to a System glucose reading that occurred immediately after the SMBG was
collected. These results characterize the performance subjects expect during real-time use of the
System in their daily diabetes management when comparing the System readings to their home blood
glucose meter results. For readings less than or equal to 80 mg/dL, the absolute difference in mg/dL
between the two glucose results was calculated. For values greater than 80 mg/dL, the absolute
percent difference (%) from the SMBG values was calculated. The percentages of total readings within
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274
15 mg/dL or 15%, 20 mg/dL or 20%, 30 mg/dL or 30%, 40 mg/dL or 40% or greater than 40 mg/dL or
40% were then calculated.
For example, if the System reads 100 mg/dL, it is between 81-180 mg/dL range and you can expect
the System readings to be within 20% of the SMBG values 85% of the time for the Software 505
Adult Study, as seen in Table 11-A.
Overall, the System in the Software 505 Adult Study reads, on average, 2.6% lower (Mean Percent
Difference) than SMBG values and 11.3% absolute different (Mean Absolute Percent Difference) than
the SMBG values. The Median Percent Difference shows that half of the time the System reads lower
in 2.7% or less than the SMBG values and the Median Absolute Percent Difference shows that half of
the time the System reads about 8.6% or less different than SMBG values, as seen in Table 12-A.
Adverse Events
No serious adverse events or device-related serious adverse events occurred during the studies. Mild
to moderate skin irritation, such as erythema or edema, occurred at the sensor needle insertion area
or around the adhesive area. No infection, bruising, or bleeding occurred at the sensor needle insertion
area or the adhesive area.
17.2 Product Specifications
User is the single use operator in the home environment.
Use of accessories, transducers and cables other than those specified or provided by the manufacturer
of this equipment could result in increased electromagnetic emissions or decreased electromagnetic
immunity of this equipment and result in improper operation.
Do not touch the metal connectors on the bottom of the transmitter and other open connectors on the
receiver, charging cable and charger.
Sensor Product Specifications
Glucose Range
40-400 mg/dL
Sensor Life
Up to 7 days
Calibration
Commercially available blood glucose meter
Calibration Range
40-400 mg/dL
Storage Condition
Temperature: 36° F-77° F
Humidity: 15%-85% RH
Sterilization
Sterile by radiation
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Transmitter Product Specifications
9438-06
Part Number
Length: 1.5 inches
Width: 0.9 inches
Thickness: 0.5 inches
Dimensions (Including
Sensor Pod)
Weight (Including Sensor
Pod)
Power Supply
Operational Conditions
0.4 ounces
Silver oxide batteries (not replaceable)
Ambient temperature is 10° C-42° C (50° F-107.6° F)
Equilibrium temperature of less than 0.5° C (0.9° F) above ambient
Humidity: 10%-95% RH
Storage Conditions
Temperature: 32° F-113° F
Humidity: 10%-95% RH
Operating Altitude
-1300 feet to 13800 feet
3 months
Limited Warranty
Moisture Protection
IP28: Protection against insertion of large objects and immersion in water
for up to 8 feet for 24 hours
Protection Against
Electrical Shock
Type BF applied part
Transmitter Performance Characteristics
Parameter
TX/RX Frequencies
Bandwidth
Maximum Output Power
Modulation
Performance Characteristic
2.402-2.480 GHz
1.02 MHz
1.0 mW EIRP
Gaussian Frequency-Shift Keying
Data Rate
1 Mbps
Data Communication Range
20 feet
The Dexcom G5 Mobile CGM System is safe for use on U.S. commercial airlines. The Dexcom G5
Mobile CGM System is an M-PED with emission levels that meet RTCA/DO160, Section 21, Category
M. Per FAA Advisory, Circular #91-21, 1B, dated 8/25/06, any M-PED that meets this standard in all
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modes may be used onboard the aircraft without any further testing by the operator. This device can
withstand exposure to common electrostatic (ESD) and electromagnetic interference (EMI).
Guidance and Manufacturer’s Declaration –
Electromagnetic Immunity
The transmitter (P/N 9438-06) is intended for use in the electromagnetic environment specified
in the next table. The customer or the user of the transmitter should ensure that it is used in such
an environment.
Transmitter Electromagnetic Immunity Specifications
Immunity Test
Electrostatic
Discharge (ESD)
IEC 61000-4-2
IEC 60601 Test
Level
Transmitter
Compliance
Level
Electromagnetic
Environment Guidance
± 8 kV Contact
± 15 kV Air
± 8 kV Contact
± 15 kV Air
Floors should be wood, concrete or
ceramic tile. If floors are covered
with synthetic material, the relative
humidity should be at least 30%.
30 A/m
Power frequency magnetic
fields should be at levels
characteristic of a typical location
in a typical commercial or hospital
environment.
Power Frequency
(50/60 Hz) Magnetic
Field
30 A/m
IEC 61000-4-8
Receiver Product Specifications
MT22719
Part Number
Reading Frequency
Dimensions
TX/RX Frequencies
Every 5 minutes
Length: 4.0 inches
Width: 1.8 inches
Thickness: 0.5 inches
2.402-2.480 GHz
1.22 MHz
Bandwidth
Maximum Output Power
Modulation
2.5 mW EIRP
Gaussian Frequency-Shift Keying
1 Mbps
Data Rate
(Continued on next page)
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(Continued from previous page)
Weight
2.4 ounces
Receiver Input
5V DC, 1A
Power Supply
MT21255
Communication Range
Memory Storage
Re-Chargeable Battery
Use
Charging Time
20 feet
30 days of glucose data
7 days of tech support data
3 days
3 hours wall outlet
The device behaves normally while being charged
Do not hold the receiver while charging for over a minute
There are no risks to connecting any part of the system to an MSO (Multiple
Socket Outlet)
Storage/Operating
Conditions
Temperature: 32° F-104° F
Humidity: 15%-95% RH, (Storage 10%-95% RH)
Operating Altitude
-1300 feet to 13800 feet
Medium Priority Alarm
Audible Output
Moisture Protection
Limited Warranty
Control Classification
50 dBa at 1 meter
IP22: Vertically falling drops
Protection against insertion of large objects and dripping water
1 year
Class II equipment
No cleaning methods are recommended or tested for the receiver. The warranty life of the receiver is
1 year. The service life for the accessories is noted to be up to one year. If you have difficulty reading
your receiver in bright sunlight, you may need to seek a shady location. Do not connect the receiver to
any equipment not specified in IFU.
Guidance and Manufacturer’s Declaration –
Electromagnetic Immunity
The receiver (MT22719) is intended for use in the electromagnetic environment specified in the next
table. The customer or the user of the receiver should ensure that it is used in such an environment.
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Receiver Electromagnetic Immunity Specifications
Immunity Test
Electrostatic
Discharge (ESD)
IEC 61000-4-2
Electrical Fast
Transient/Burst
IEC 61000-4-4
Surge
IEC 61000-4-5
Surge
IEC 61000-4-5
Voltage Dips, Short
Interruptions and
Voltage Variations
on Power Supply
Input Lines
IEC 61000-4-11
IEC 60601-1-11
IEC 60601 Test
Level
Transmitter
Compliance
Level
Electromagnetic
Environment Guidance
± 8 kV Contact
± 15 kV Air
± 8 kV Contact
± 15 kV Air
Floors should be wood, concrete or
ceramic tile. If floors are covered
with synthetic material, the relative
humidity should be at least 30%.
± 2 kV for power
supply lines
± 1 kV for
input/output lines
± 2 kV for power
supply lines
Not applicable
Mains power quality should be that
of a typical commercial or hospital
environment.
± 1 kV line(s) to line(s)
± 2 kV line(s) to earth
± 1 kV line(s) to line(s)
Not applicable
Mains power quality should be that
of a typical commercial or hospital
environment.
± 1 kV line(s) to line(s)
± 2 kV line(s) to earth
± 1 kV line(s) to line(s)
Not applicable
Mains power quality should be that
of a typical commercial or hospital
environment.
0% U T for 1 cycle
0% U T for 0.5 cycle at
8 phase angles
70% U T (30% dip in
Ut) for 25 cycles
0% U T for 250 cycles
0% U T for 1 cycle
0% U T for 0.5 cycle at
8 phase angles
70% U T (30% dip in
Ut) for 25 cycles
0% U T for 250 cycles
Mains power quality should be that
of a typical commercial or hospital
environment.
30 A/m
Power frequency magnetic
fields should be at levels
characteristic of a typical location
in a typical commercial or hospital
environment.
Power Frequency
(50/60 Hz) Magnetic
Field
30 A/m
IEC 61000-4-8
NOTE: U T is the a.c. mains voltage prior to application of the test level.
Guidance and Manufacturer’s Declaration –
Electromagnetic Immunity
The Dexcom G5 Mobile System is intended for use in the electromagnetic environment specified in the
next table. The customer or the user of the Dexcom G5 Mobile System should ensure that it is used in
such an environment.
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System Electromagnetic Immunity Specifications
Immunity Test
Conducted RF
IEC 61000-4-6
(Receiver only)
Radiated RF
IEC 61000-4-3
IEC 60601 Test
Level
Transmitter
Compliance
Level
3 Vrms
150 kHz to 80 MHz
6 Vrms
10 V/m at 80 MHz
to 2700 MHz (AM
Modulation)
10 V/m
Electromagnetic
Environment Guidance
Floors should be wood, concrete or
ceramic tile. If floors are covered
with synthetic material, the relative
humidity should be at least 30%.
Recommended Separation Distance
d = 1.2 √P 150 kHz to 80 MHz
d = 1.2 √P 80 MHz to 800 MHz
d = 2.3 √P 800 MHz to 2.5 GHz
Where P is the maximum output
power rating of the transmitter
in watts (W) according to the
transmitter manufacturer and d
is the recommended separation
distance in meters (m).
Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site surveya should
be less than the compliance level in
each frequency rangeb.
Interference may occur in the
vicinity of equipment marked with
following symbol:
NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
a. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones
and land mobile radios, amateur radio, AM and FM radio broadcast, and TV broadcast cannot be
predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered. If the measured field strength in
the location in which the Dexcom G5 MOBILE System is used exceeds the applicable RF compliance
level above, the Dexcom G5 MOBILE System should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as reorienting or
relocating the Dexcom G5 MOBILE System.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
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Guidance and Manufacturer’s Declaration –
Electromagnetic Emissions
The Dexcom G5 Mobile System is intended for use in the electromagnetic environment specified in the
next table. The customer or the user of the Dexcom G5 Mobile System should ensure that it is used in
such an environment.
Electromagnetic Emissions Specifications
Emissions Test
RF Emissions
CISPR 11
RF Emissions
CISPR 11
Compliance
Electromagnetic Environment Guidance
Group 1
The Dexcom G5 Mobile System uses RF energy only for
its internal function. Therefore, its RF emissions are very
low and are not likely to cause any interference in nearby
electronic equipment.
Class B
The Dexcom G5 Mobile System is suitable for use in all
establishments including domestic and those directly
connected to the public low-voltage power supply network
that supplies buildings used for domestic purposes.
Recommended Separation Distances Between Portable
and Mobile RF Communications Equipment and the
Receiver
The receiver is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the receiver can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the receiver as recommended in the next table, according to the maximum
output power of the communications equipment. Portable and mobile RF equipment include: baby
monitors, Bluetooth wireless headsets, wireless routers, microwave ovens, laptops with internal
Wi-Fi adapters, GSM cell phones, RFID scanners and hand-held security metal detector often used by
security screeners.
Minimum Recommended Distance Between Other RF Transmitters and
the Dexcom Transmitter/Receiver
Rated Maximum
Output Power of
Transmitter (W)
Separation Distance According to Frequency of Transmitter (m)
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.5 GHz
d = 1.2 P ½
d = 1.2 P ½
d = 2.3 P ½
0.12
0.12
0.23
0.01
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(Continued from previous page)
Rated Maximum
Output Power of
Transmitter (W)
Separation Distance According to Frequency of Transmitter (m)
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.5 GHz
d = 1.2 P ½
d = 1.2 P ½
d = 2.3 P ½
0.38
0.38
0.73
0.1
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the recommended separation
distance (d) in feet can be estimated using the equation applicable to the frequency of the transmitter,
where P is the maximum output power rating of the transmitter in watts (W) according to the
transmitter manufacture.
NOTE 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
USB Charging/Download Cable* Specifications
Part Number
MT20655
Input/Output
5V DC, 1A
USB A to USB micro B
Type
3 feet
Length
* The power supply/charger can be connected to the USB charging/download cable for charging using
an AC power outlet. Misuse of the USB cable can present a strangulation risk. Isolation of system is by
unplugging charger from wall.
Power Supply/Charger Specifications
Part Number
MT21255
Class
II
Input
AC Input 100-240 Vac, 50/60Hz, 0.2A, 0.2A rms at 100 Vac
DC Output
5V DC, 1A (5.0 Watts)
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17.3 FCC Requirements
The transmitter and receiver covered by this user guide have been certified under FCC ID:
• G5 Mobile Transmitter: PH29715
• G5 Mobile Receiver: PH29496
Although the transmitter and receiver have been approved by the Federal Communications
Commission, there is no guarantee that they will not receive interference or that any particular
transmission from either device will be free from interference.
Compliance Statement (Part 15.19)
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause
undesired operation.
Warning (Part 15.21)
Changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment. No modification of the equipment is allowed as it could
create an unsafe condition.
FCC Interference Statement (Part 15.105 (b))
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
4. Consult the dealer or an experienced radio/TV technician for help.
This portable transmitter with its antenna complies with FCC/IC RF exposure limits for general
population/uncontrolled exposure.
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Chapter 18
Everything Else G5:
Troubleshooting
18.1 Introduction
Sensor pod not sticking? Prompt won’t go away? Not getting your sensor glucose readings?
Don’t know when to replace your transmitter? This chapter will help you figure it out!
Troubleshooting sections are categorized by function or system component. The solutions
here are meant to be brief and not all inclusive, some have audible prompts, and others
don’t. When more detailed answers or preventative measures are in a chapter, you’ll get a
brief explanation here, and then get directed to the applicable chapter and section.
After looking at the troubleshooting chapter, are you still not sure what to do? Or maybe your
problem is hardware (e.g., receiver or transmitter failure).
If your problem is not found here, follow the steps listed on your app screen, or call
Technical Support.
Please call the Dexcom Technical Support Team, 24/7, toll free at 1.877.339.2664 or toll at
1.858.200.0200 if any of these errors continue and the instructions don’t resolve the issue.
18.2 Safety Statements
Following are the Safety Statements for the Troubleshooting chapter.
WARNING
Do: Calibrate at least once every 12 hours.
Why: Calibrating less often than every 12 hours might cause inaccurate sensor
glucose readings.
Consequences: Missing severe low (hypoglycemia) or high (hyperglycemia) Alarm
or Alerts.
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PRECAUTION
Do: Enter the exact BG value displayed on your BG meter within five minutes of a carefully
performed fingerstick measurement.
Why: Entering the wrong blood glucose values, or waiting more than five minutes before
entry, might affect sensor accuracy.
Consequences: You may miss a severe low or high glucose events.
PRECAUTION
Don’t: Never prevent communication between transmitter and display devices.
Do: Keep smart device and receiver within 20 feet of transmitter and away
from obstructions.
Why: If your transmitter display device(s) are more than 20 feet apart or are separated by
an obstruction, they might not communicate.
Types of obstruction differ and not all types have been tested. Obstructions can include
water, walls, metal, etc.
Water (e.g., swimming, surfing, bathing, etc.) can severely limit communication range.
Consequences: Missing severe low or high Alarm or Alerts.
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18.3 Troubleshooting
No Alarm/Alerts
Device
What you see
Problem
Smart Device:
In App
What you do
See Chapter 11.
Not receiving
Alerts
Check Alarm/Alerts,
sound and/or vibrations
for notifications are on.
Check your smart
device is not on mute (if
applicable).
Receiver
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Sensor Glucose Readings
Device
What you see
Problem
What you do
See Chapter 7.
Differences are not
uncommon.
BG Meter
Readings from different
body fluids reflect
different numbers:
Meter - from blood
Sensor - from
interstitial fluid
Smart Device:
In App
Sensor readings
and BG meter
glucose values
often don’t show
the same
Receiver
20/20 Rule
If the meter shows 80
or less, CGM should
read within ± 20 points.
If the meter shows
80 or above, the CGM
should read ± 20%.
Example: a 202 mg/dL
sensor reading and a
188 mg/dL glucose
meter value = a 7%
difference (this is still
considered accurate).
Outside of 20/20 rule:
Calibrate again.
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Device
What you see
Problem
What you do
See Chapter 9.
Don’t calibrate.
Smart Device:
In App
Wait for more prompts.
Not getting
sensor glucose
readings
System may correct
problem itself and
continue to provide
sensor glucose
readings.
Receiver
3 hours since last
sensor reading: call
Technical Support (see
Section 16.1).
Smart Device:
In App
See Chapter 9.
Wait
Not getting
sensor glucose
readings
Receiver
System will often
resolve itself.
If this continues for an
extended period of time,
call Technical Support
to report error (see
Section 16.1).
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Device
What you see
Problem
See Chapter 9.
Smart Device:
In App
Don’t calibrate.
Wait 10 minutes.
System display
device and
transmitter not
communicating
Receiver
Smart Device:
In App
What you do
Move display device
and transmitter within
20 feet of each other
without obstruction.
Wait another 10
minutes.
App (if not resolved):
1. Go to Settings.
2. Tap Bluetooth.
3. Turn Bluetooth
Off and On.
See Chapter 7.
Wait up to 2 hours.
No sensor
glucose readings System is counting
down to when you do
your initial calibration.
Receiver
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Applicator
Picture
Problem
What you do
See Chapter 6.
Safety lock
stuck
Pull safety lock straight out:
• Away from your body
• Follow direction of safety lock Up
Arrow
See Chapter 6.
Collar won’t pull
up
Use force when pulling the collar up.
Check white plunger is completely
down—flush to the applicator barrel.
See Chapter 6.
Can’t remove
transmitter latch
Don’t pull it straight off.
Hold sensor pod with one hand.
Twist transmitter latch with other hand to
break transmitter latch off.
See Chapter 6.
Sensor pod
won’t stick
Put medical tape over sensor pod’s white
adhesive patch (e.g., Blenderm).
Don’t place tape over the transmitter.
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Hardware Error
Device
What you see
Problem
What you do
See Chapter 4.
Receiver
Won’t turn on:
Battery dead
Charge receiver using
electrical outlet, not
computer/laptop.
Full charge may take up to
five hours.
See Chapter 4.
Reset receiver.
Connect receiver to charger.
Receiver
After full charge
session:
Won’t turn on
Insert end of paper clip
into small circular hole on
receiver’s back.
Push down on paper clip.
Receiver will vibrate.
Processing screen appears.
Charge receiver.
Receiver
Receiver Low
Battery
See Chapter 4.
Charge receiver.
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Device
What you see
Problem
What you do
See Chapter 16.
Write down error code.
Receiver
Corrupted
database
Contact Dexcom Technical
Support (see Section 16.1).
Check BG value using BG
meter.
Prompt: Vibrates one time
for four seconds and four
beeps.
See Chapter 16.
Do nothing.
Receiver
System
Recovery
Receiver is able to continue
to work and recover from an
error.
App: Tap OK to clear Alert.
Receiver: Press Select to
clear Alert.
See Chapter 5.
Smart
Device:
In App
Go to smart device’s
Settings.
No Bluetooth
Make sure Bluetooth is On.
If problem persists,
please contact device’s
manufacturer.
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Calibration Error
Device
What you see
BG Meter
Problem
What you do
System will
not accept
calibration if
outside of the
40-400 mg/dL
range
See Chapter 7.
Wait until your glucose is
between 40-400 mg/dL.
Calibrate only when your BG
meter values are between
40-400 mg/dL.
See Chapter 7.
Smart
Device:
In App
Receiver
Wait 15 minutes.
System didn’t
accept recent
calibration (see
Sensor Glucose
Readings
troubleshooting
for a possible
reason)
Enter 1 calibration.
If error screen still appears
enter 1 more BG meter
value.
Wait 15 minutes.
If no sensor glucose readings
appear on the display, the
sensor needs to be replaced.
No sensor
Call Technical Support to
glucose readings report error (see Section
will be displayed 16.1).
until error is
App:
resolved
Follow same instructions.
Tap question mark to get
more information.
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Device
What you see
Problem
What you do
See Chapter 7.
Wait 15 minutes.
Enter 1 BG meter value.
Smart
Device:
In App
Wait 15 more minutes.
System didn’t
accept recent
calibration
If error screen still appears
enter 1 more BG meter
value.
Wait 15 minutes.
If no sensor glucose readings
appear on the display, the
sensor needs to be replaced.
Receiver
Call Technical Support (see
Section 16.1) to report error.
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Transmitter Error:
Device
What you see
Problem
What you do
See Chapter 16.
Smart
Device:
In App
Transmitter not
working
Sensor session
automatically
stopped
Receiver
Contact Technical Support
to report issue (Section 16.1).
Start checking BG value
using BG meter.
App:
Tap OK to clear Alert.
No sensor
Receiver:
glucose readings Press Select to clear.
displayed
Will not re-alert once
cleared.
Order new transmitter.
See Chapter 6.
Smart
Device:
In App
Check Transmitter SN in
display device is correct.
If wrong:
Stop sensor session.
Re-Enter correct transmitter
SN.
Pairing Failed
Receiver
App:
Menu > Trans SN > Enter
correct SN
Receiver:
Settings > Trans SN > Enter
correct SN
If correct:
Call Tech Support (see
Chapter 16).
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Device
What you see
Problem
What you do
See Chapter 16.
Smart
Device:
In App
App:
Tap OK to clear
Transmitter Low
Battery
Receiver:
Press Select to clear.
Will not re-alert once
cleared.
Order new transmitter.
Receiver
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Chapter 19
Everything Else G5:
Symbols on Package Labels
The following symbols may be found on the sensor, transmitter, and receiver package labels.
These symbols tell you about the proper and safe use of the Dexcom G5 Mobile System.
Some of these symbols may not have meaning in your region, and are listed for informational
purposes only. This table shows what each symbol means.
Use By Date
Caution
Date of Manufacture
SN
Batch/Lot Number
REF
STERILE R
Part/Catalog Number
Sterile by Radiation
Do Not Reuse
Temperature Limitation
Serial Number
IP28: Protection Against
Insertion of Large Objects and
Immersion in Water
Class II Equipment
IP22: Protection Against
Insertion of Large Objects and
Dripping Water
Alternating Current
Direct Current
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Type BF Applied Part
EC REP
Authorized Representative in
the European Community
Manufacturer
Non-Ionizing Radiation
Humidity Limitation
Marking Certifies Device Meets
European Council Directive
93/42/EEC
European Union WEEE
Directive 2012/19/EU
Do Not Use if Package is
Damaged
Electrical Equipment Designed
Primarily for Indoor Use
Ship By Date
Input
Prescription Required
Keep Dry
MR Unsafe
Refer to Instruction
Manual/Booklet
Bluetooth
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SHARING IS CARING
•Dexcom Share
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Chapter 20
Sharing Is Caring:
Dexcom Share
20.1 Learning About Dexcom Share
Glossary
Airplane Mode
A setting on a smart device where wireless features are disabled
in order to comply with airline regulations.
Application or App
A software program, such as the Dexcom G5 Mobile App and the
Dexcom Follow App, designed to run on a smart device.
App Store
Internet store for downloading applications to a smart device.
Blood Glucose
Meter
A device used to measure how much glucose is in the blood.
BG Value
The measurement of glucose in the blood.
Bluetooth
Bluetooth wireless technology allows devices to wirelessly
communicate with each other.
Default
A manufacturer’s preset option for a device setting.
Delay
Amount of set time that passes before a notification is sent to a
Follower.
Dexcom Share
Cloud
A secure online storage server where Dexcom Share feature
information is stored and then shared with Followers.
Dexcom Follow App
Gets the Sharer’s glucose information and prompt data from the
Dexcom Share Cloud.
Dexcom G5
Mobile/G4
PLATINUM Sensor
The Dexcom G5 Mobile System part that includes an applicator
and sensor wire.
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Dexcom G5 Mobile
System
CGM system made of a sensor, transmitter, and smart device/
receiver.
Dexcom G5 Mobile
Transmitter
The Dexcom G5 Mobile System part that wirelessly sends glucose
information to the Dexcom G5 Mobile App.
Dexcom G5 Mobile
App
Receives glucose information from the Dexcom G5 Mobile
Transmitter. Sends glucose information to the Dexcom Cloud
using an Internet connection.
Dexcom Share
Secondary notification using the following parts:
• Dexcom G5 Mobile System
• Bluetooth wireless technology
• Sharer’s smart device
• Dexcom G5 Mobile App
• Internet
• Follower’s smart device
• Dexcom Follow App
Do Not Disturb
A setting on a smart device where all incoming calls, alerts, and
notifications are silenced.
Do Not Disturb can be set to specific times and can be set to
allow exceptions (people who can disturb you).
Follower
A person that gets the Sharer’s shared information in the Dexcom
Follow App.
Follow Dashboard™
On the Dexcom Follow App, the Follow Dashboard shows the
glucose information of up to five (5) Sharers.
Follower’s Smart
Device
Runs the Dexcom Follow App.
Hyperglycemia
High BG. Same as “high.”
The default high alert in the Dexcom G5 Mobile CGM System is
set to 200 mg/dL.
Consult your healthcare professional to determine the appropriate
hyperglycemic setting for you.
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Hypoglycemia
Low BG. Same as “low.”
The default low alert the Dexcom G5 Mobile CGM System is set to
80 mg/dL.
Consult your healthcare professional to determine the appropriate
hypoglycemic setting for you.
Invite/Follow
Invitation Email
An email request for a person to download the Dexcom Follow
App and get the Sharer’s shared information.
Jailbroken
The removal of limitations set by the manufacturer on a smart
device.
Do not use jailbroken smart devices with Dexcom Share.
mg/dL
Milligrams per deciliter. The standard unit of measure for sensor
glucose information in the United States.
Mobile Data
Connections
Cellular networks, such as 3G, 4G and LTE™, used by a smart
device to access the Internet.
No More Data
prompt
Prompts the Follower when the Sharer is unable to share glucose
information.
Not Sharing
When the Sharer chooses to temporarily not share glucose data
with the Follower.
Obstruction
An object that stops the wireless communication between
devices, such as wall thickness or radio waves.
Profile
Located in Follow Dashboard and displays the Sharer’s glucose
information, trend arrow and profile picture.
Prompt
A visual message that appears on the screen of the Follower’s
smart device. Prompt may also include a sound, depending on the
smart device’s settings.
Range
Maximum distance two devices can communicate wirelessly
without obstruction.
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Real-Time CGM
Data the Sharer receives on the Dexcom G5 Mobile App.
Although your Dexcom Follow App might be similar to what you
see on your app, it cannot be considered real-time because there
are layers of communication between the Dexcom G5 Mobile App
and the Dexcom Follow App.
Repeat
Amount of time the Follower chooses before they wish to receive
a repeated notification.
Sensor Glucose
Reading
A glucose measurement taken by the Dexcom G5 Mobile System.
Sharer
The person who uses the Dexcom G5 Mobile System.
Sharing
The act of electronically transmitting glucose information from the
Sharer’s smart device to the Follower’s smart device.
Simultaneous Voice
and Data
The ability to make a phone call and access the Internet on the
same cellular connection at the same time.
Smart Device
A smart device is a cordless electronic device (unless charging),
mobile (easily transportable), connected (via Wi-Fi, 3G, 4G, etc.)
that can operate the Dexcom G5 Mobile App or the Dexcom
Follow App.
Examples of smart devices are smartphones or tablets.
For a list of compatible smart devices, see
dexcom.com/compatibility.
Standard Home
Glucose Monitoring
Self-monitoring of BG using blood taken from the finger and a BG
meter.
Trend Arrow
The arrow next to the Sharer’s glucose value, located on the
Sharer’s profile on the Dexcom Follow App.
This is the same trend arrow that is found on the Dexcom G5
Mobile Receiver.
Trend Graph
Displays the pattern of the Sharer’s glucose information.
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Wi-Fi or Wireless
Internet
A wireless technology that allows electronic devices access to the
Internet. These networks can include your home Internet or one
found at a public location.
20.2 Dexcom Share Overview
Dexcom Share is a feature within the Dexcom G5 Mobile App. It allows for remote monitoring
from one person, the Sharer, of Dexcom G5 Mobile CGM data to another person, the Follower.
Dexcom Share includes:
• Dexcom G5 Mobile CGM System
• Sharer’s smart device
• Dexcom G5 Mobile App
• Internet connection
• Follower’s smart device
• Dexcom Follow App
You cannot use the Share feature with Dexcom G5 Mobile Receiver.
Once the Sharer activates the Share feature in their Dexcom G5 Mobile App, the smart device
transfers sensor glucose readings to the Dexcom Share Cloud using either Wi-Fi or a cellular
data plan. Then, the sensor glucose readings are sent from the Dexcom Share Cloud to the
Follower’s smart device using Wi-Fi or the Follower’s cellular data plan.
Figure 10. Sharing
The Sharer must be within 20 feet of their smart device in order to send data to their
Follower or it will not work.
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Dexcom Share Parts
Sharer’s smart device*1
Follower’s smart device*1
Dexcom G5 Mobile App
Dexcom Follow App
Dexcom G5 Mobile Transmitter*
Dexcom G5 Mobile/G4 PLATINUM Sensor*
Internet/Wi-Fi or mobile data service/3G/4G/LTE*
Bluetooth
*Must be purchased separately.
1
A list of compatible devices can be found at dexcom.com/compatibility.
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Conditions Affecting Use
Once sharing is active, make sure the Share’s and Follower’s smart device settings are
not altered.
Make sure the Sharer’s and Follower’s smart devices have:
• Enough battery power to maintain sharing
• Sharer’s smart device has Internet connection
• Notifications turned on. If turned off, Follower won’t receive any notifications
• Follower’s smart device has an Internet connection
Dexcom recommends charging the smart device when sharing.
20.3 Risks and Benefits
Risks
Dexcom Share is a feature of the Dexcom G5 Mobile Continuous Glucose Monitoring
(CGM) System. The main risks involved with using the feature Dexcom Share are based on
misunderstanding its purpose.
Remember that the Dexcom Share in the Dexcom G5 Mobile CGM System is a secondary
notification feature, not a real-time remote monitoring system.
With using the Dexcom Share feature, there are 3 distinct parts of glucose monitoring:
1. Blood glucose meter - use this to make any treatment decisions.
2. Dexcom G5 Mobile CGM System - use the Dexcom G5 Mobile CGM System to
complement, but not replace, information obtained from the blood glucose meter. It
detects glucose trends and tracks glucose patterns.
3. Dexcom Share - this is an optional add-on to the Dexcom G5 Mobile CGM System that
can share glucose information and notifications with up to five (5) other people. Shared
sensor glucose readings and information can add another level of awareness.
Using the wrong glucose information for treatment decisions could lead to low or high
glucose. Blood glucose values from a blood glucose meter may differ from the information
displayed on Dexcom Follow App. All treatment decisions should be made using a blood
glucose value from your meter, not the glucose information displayed on the Dexcom
Follow App.
Followers who are concerned by notifications on the Dexcom Follow App should contact
the patients and remind them to check their blood glucose with a blood glucose meter
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before driving a car or making any treatment decisions, such as taking insulin or eating
fast-acting carbohydrates.
Sharers should not rely on Followers to notify them about low or high glucose.
Any problems with smart device(s), Bluetooth, wireless Internet connection, mobile data
connection, Dexcom Share Cloud or not being in the communication range could cause data
to not be shared with the Follower. In addition, if the Delay setting is too long, the Follower
might not be aware of glucose level changes in a reasonable time. Therefore, the Dexcom
Share feature should be used only to give a secondary level of awareness and should not be
expected to always communicate and transfer sensor glucose readings and information.
Benefits
Patients usually respond when their continuous glucose monitoring (CGM) systems
alert them.
However, experts advise that an additional CGM alert to another person may be helpful
in increasing the detection of low glucose or high glucose values, especially at night. The
Dexcom Share feature enables this additional awareness, even when the Sharer and Follower
are not in the same place.
The Dexcom Share feature may provide improved quality of life and greater peace of
mind to patients, their caregivers and their support team by allowing the Dexcom G5
Mobile Continuous Glucose Monitoring System Alerts, Alarms and trend graphs to be
checked remotely.
20.4 Safety Statement
Intended Use
The purpose of Dexcom Share Direct Secondary Displays is to notify another person, the
Follower, of the patient’s Dexcom Continuous Glucose Monitoring (CGM) System sensor
glucose information.
The Secondary Displays is intended for providing secondary notification of a continuous
glucose monitoring system and does not replace real time continuous glucose monitoring
(Dexcom G5 Mobile System) or standard home blood glucose monitoring. The Dexcom
Share Direct Secondary Displays is not intended to modify or analyze data received from the
continuous glucose monitor system. Nor is it intended to instruct, or to transmit information
to the continuous glucose monitor system.
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The Dexcom Share Direct Secondary Displays is not intended to serve as a replacement for
a primary display device for a continuous glucose monitoring system. The Dexcom Share
Direct Secondary Displays is not intended to receive information directly from the sensor or
transmitter of a continuous glucose monitoring system.
Important User Information
Please review the indications, contraindications, warnings, precautions, cautions and other
important information in the Dexcom G5 Mobile System User Guide. Dexcom Share is a
feature of the Dexcom G5 Mobile System.
If you do not have the Dexcom G5 Mobile System User Guide, you can view it on dexcom.com
or call 1.877.339.2664 to request a copy. Availability hours: Monday-Friday, 6am-6pm PST.
Please contact your healthcare professional during hours the line is unavailable.
Contraindications
Do not bring the smart device (e.g., mobile phone, tablet computer) into a room containing
medical equipment such as Magnetic Resonance Imaging (MRI), Computed Tomography (CT),
or diathermy.
These smart devices have not been tested with this equipment. Exposure to these types
of equipment could heat and damage the smart devices so that they are unable to send or
receive glucose information.
Warnings
Dosing decisions should not be made based on this device. The user should follow
instructions on the continuous glucose monitoring system.
This device is not intended to replace self-monitoring practices advised by a physician.
Dexcom Share does not work alone. Dexcom Share does not replace the Dexcom G5 Mobile
System and requires Share to be turned “On” to communicate glucose information to
the Follower.
You cannot use Dexcom Share to make treatment decisions, such as how much insulin to
take. Dexcom Share does not replace a blood glucose meter. Always use the values from a
blood glucose meter for treatment decisions.
Blood glucose values may differ from the sensor glucose information. Using the sensor
glucose information for treatment decisions could lead to low or high blood glucose values.
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Precautions
Do not use Dexcom Share as the main source of CGM glucose trend information. Use
the Dexcom G5 Mobile Receiver as the main device to track sensor glucose information,
notifications and alarms.
At times, the patient will be unable to share data using Dexcom Share, and the Follower
might miss helping the patient in the event of low or high blood glucose values. Do not rely
solely on the Follower to alert the patient of low or high glucose events or other important
information. At times, the Follower may not receive data, and the patient will not be notified
of this fact.
When using Dexcom Share, make sure Share is turned “On.” If not, the patient will be unable
to share data, and the Follower might miss helping the patient in the event of low or high
blood glucose values. If the patient’s smart device does not have a connection or loses the
connection, the patient will be unable to share data, and the Follower might miss helping the
patient in the event of low or high blood glucose values.
Do not use Dexcom Share unless both the patient’s and Follower’s smart devices have active
Internet connections in order to share data. If either the patient or the Follower does not
have a connection, loses their connection, turns off the connection (“Airplane Mode”) or if
the smart device is in Do Not Disturb mode, the patient will be unable to share data and the
Follower might miss helping the patient in the event of low or high blood glucose values. To
check this, make sure that the Follower’s smart device can receive text messages. Follow
notifications and text messages work by a similar process.
Make sure the patient’s and Follower’s smart devices have charged batteries or are
connected to electrical outlets. If the smart device shuts down due to low battery, the patient
will be unable to share data, and the Follower might miss helping the patient in the event of
low or high blood glucose values.
If the patient’s smart device is powered off or restarted, make sure the Dexcom G5 Mobile
App is reopened after the smart device is turned back on in order to resume sharing. If the
G5 Mobile App is not reopened, the patient will be unable to share data, and the Follower
might miss helping the patient in the event of low or high blood glucose values.
Do not turn off sounds in the Follower’s smart device at any time that he or she wants Follow
notifications to be heard. The smart device settings override the Dexcom Follow App, and all
notifications will be silent even if the Follower has selected a Dexcom Follow App notification
sound. If the smart device has a vibrate feature and vibrate is On, the Dexcom Follow App
notifications will only vibrate.
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Check the delay settings on the patient’s smart device to make sure they are not too long.
The Follower will not receive notifications until after the time period in the delay has passed,
and the Follower might miss helping the patient in the event of low or high blood glucose
values if the delay is too long.
The patient should not choose to “Not Share” with the Follower at any time when he or she
wants the Follower to get notifications. During the time the patient chooses to “Not Share,”
the Follower will not receive notifications and might miss helping the patient in the event of
low or high blood glucose values.
Check the Dexcom Follow App’s trend graph if the Follower’s smart device has been off or
if there is no data connection (e.g., Internet/Wi-Fi or mobile data service/3G/4G/LTE is lost,
connection is turned off in Airplane Mode, or smart device touch is placed in Do Not Disturb
mode). When the smart device is turned back on, the Follower will only receive the most
recent notification and might miss helping the patient in the event of prior low or high blood
glucose values.
Sharers and Followers should check whether their cellular service carriers support voice
and data at the same time (simultaneous voice and data). If their carriers do not support
simultaneous voice and data, the Dexcom G5 Mobile App may not be able to share glucose
readings and the Dexcom Follow App may not be able to receive notifications or glucose
readings during phone calls. Dexcom Share will resume sharing after the phone call has
ended, and the Follower will receive any waiting notifications after the phone call has ended.
20.5 Setting up Dexcom Share
Dexcom Share Description
What Dexcom Share does:
• Connects your smart device with your Follower’s smart device via either a Wi-Fi or
mobile data connection (connect to Wi-Fi through a secured network to maintain
data security)
• Invites and sends Followers your setting recommendations
• Displays the status of your smart device, and the Dexcom Share Cloud
○○ Confirms your sensor glucose readings are being shared with your Follower(s)
What Dexcom Share does not do:
• Let you know when the Follower is not receiving your sensor glucose readings
and information
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Tips
• Read the rest of the Dexcom G5 Mobile CGM System User Guide before using
Dexcom Share
• Always confirm information with a BG meter before making treatment decisions
• Check the status screen after turning Dexcom Share “On” on the smart device to make
sure it is working
Installing the Dexcom G5 Mobile App
Step
What you see
What you do
Download the Dexcom G5 Mobile App from your app
store.
1
See your smart device’s user manual for
instructions.
Download the Dexcom G5 Mobile App to use
Dexcom Share.
Launch the Dexcom G5 Mobile App.
2
Setup your smart device (see the Dexcom G5 Mobile
User Guide) before sharing.
Once your App has set up, activate Dexcom Share.
A series of screens walk you through Dexcom Share’s features highlighting
important information.
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Activating Your Share Feature
Step
What you see
What it means
What you do
1
Activates Dexcom Share. Tap Dexcom Share icon
If Dexcom Share icon is in the upper right corner
gray, your Share feature of your smart device’s
has not been turned on. home screen.
2
Dexcom Share Welcome
Screen.
Read screen.
Tap Next when done.
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(Continued from previous page)
Step
What you see
What it means
What you do
3
Message about Internet
access.
Tap Next.
4
How to know you are
sharing your data.
Tap Next.
(Continued on next page)
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Step
What you see
5
What it means
What you do
How to know your
Follower is not getting
your sensor data.
Tap Let’s Get Started to
move on and invite your
Followers.
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Inviting Followers
Step
What you see
1
What you do
Tap Invite Followers to set up your Followers.
(Continued on next page)
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(Continued from previous page)
Step
What you see
What you do
Enter the Follower’s nickname and email address.
Confirm Follower’s email address.
2
The Follower will get a Follow Invitation email.
Make sure the Follower can access this email
account from their smart device.
Tap Next.
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(Continued from previous page)
Step
What you see
What you do
Tap Allow Trend Graph View’s On/Off switch if you
want Follower to see your trend graph.
Tap Next.
3
Turned Off: Follower sees only your sensor glucose
reading and trend arrow.
Turned On: Follower sees your sensor glucose
reading, trend arrow and trend graph.
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(Continued from previous page)
Step
What you see
What you do
Choose if your Follower gets your urgent low, low
and high sensor glucose Alarm/Alerts.
Choose if you want your Follower to get prompts if
they are not receiving your sensor glucose readings.
4
Select what Alarms/Alerts your follower gets and
how long you are low/high or not sharing data (for
example, if you want your Follower to know when
your glucose is above 200 mg/dL for more than
2 hours, you can set up in the Follower Settings
Menu).
Tap Save for each Follower Setting “Save.”
Tap Next when done.
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(Continued from previous page)
Step
What you see
What you do
Before Follower invitation is sent, review the
Summary screen.
5
Tap Send Invitation.
After sending invitation, you cannot adjust the
Follower’s settings.
To add more Followers:
6
Tap Followers tab on the Share Status screen.
Invite up to a total of five (5) Followers.
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20.6 Using Dexcom Share
Dexcom Share Status
You can look at the Dexcom Share icon on your home screen to see if Dexcom Share is
working. After turning Dexcom Share on, check its status.
Share icon
Figure 11. Dexcom G5 Mobile App Home Screen
Dexcom Share Status Icons
Status Tab
What it is
The Share icon is in color when Dexcom Share is sending
sensor glucose readings and information.
1
The Share icon is gray with a red circle when Dexcom Share is
not working.
The sharer should tap on the grayed out Share icon when it is
not working to get further information about the error.
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(Continued from previous page)
Status Tab
What it is
The Share icon is light gray when Dexcom Share has not been
activated.
The sharer should tap the light gray icon to get started using
Dexcom Share.
When a device or connection is not working, Dexcom Share will not work. The Sharer will not
be able to send their sensor glucose readings and data to their Follower.
Troubleshooting Status Issues
Dexcom Share’s status bar is a useful tool. It can help identify if there is a problem and
Dexcom Share is not working. The following table provides troubleshooting tips for the Share
status bar.
On/Off Switch Turns sharing on
or off
Sharing Status
Bar - Status of
sharing your
sensor glucose
readings with your
Followers
Follower List - Add
Followers and lists
status of Followers.
Figure 12. Dexcom Share Screen
NOTE: Whether or not Dexcom Share is working and the Followers are receiving glucose
Alarm/Alerts, you must always refer to your Dexcom G5 Mobile display device for your sensor
glucose readings and alerts.
All treatment decisions must be based on your BG value from your BG meter.
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What you see
What it means
Green Check:
All connections are working
What you do
N/A.
The Sharer should make
sure:
Issue with:
• Sharer’s CGM data
• Your smart device
• There is a glucose value
on the smart device
• Transmitter is in range
of the smart device
• Tap on blue “?” to learn
more about how to
troubleshoot this issue
• The Sharer should allow
up to 10 minutes for
their status to turn green
and a green check mark
to appear
If the Sharer continues to see
this, the Sharer should turn
off Share and then turn it
back on.
(Continued on next page)
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(Continued from previous page)
What you see
What it means
What you do
The Sharer should make
sure:
Issue with:
• Sharer’s Internet
connection
• Dexcom Share Cloud
• Their Wi-Fi or cellular
connection is ON
• They are in an area that
has cellular reception
• They are not on a voice
call
• They can access the
web via a browser
• Check later or follow
up with their Internet
connectivity provider
• Tap on blue “?” to learn
more about how to
troubleshoot this issue
Follower List
The Followers list allows the Sharer to manage their Followers.
In the Follower list you can:
• Invite a new Follower
• See the status of Followers you have invited
• Glance at what options your current Followers have
Icon/Status
What you see
What it means
Invite a new Follower.
(Continued on next page)
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(Continued from previous page)
What you see
What it means
Follower is set to get prompts from their Sharer.
Follower is able to view their Sharer’s trend graph.
Follower did not accept their Sharer’s Follow Invitation email
within 7 days.
The Sharer can invite their Follower again by pressing on the
+ icon in the top right corner of the screen.
Follower has been sent a Follow Invitation email but has not
accepted it yet.
Sharer stopped sharing with Follower.
Follower will not get any of the Sharer’s glucose information,
Alarm/Alerts, or trend graph updates.
Editing/Removing Followers
Tap on a Follower to edit the Follower’s profile (nickname or ability to view trend graph) or
remove a follower. Remove a follower by tapping “Remove Follower.” Once removed, they
won’t get glucose information or Alarm/Alerts.
NOTE: The Sharer cannot change any Follower settings after the Follow Invitation email
is sent.
Stop Sharing
The Sharer can swipe the On/Off switch to temporarily stop glucose information and
Alarm/Alerts from being sent to Followers. Sharing stops until the Sharer turns the On/Off
Switch back on.
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For reasons of safety and intended use, the Follower will get a message telling them their
Sharer’s data was set to Not Sharing. The Follower’s dashboard will show the Sharer has
stopped sharing glucose information.
20.7 Dexcom Follow App
Dexcom Follow App Description
The Dexcom Follow App is a separate App from the Dexcom G5 Mobile App. Your Followers
only need to download and install the Dexcom Follow App.
What the Dexcom Follow App does:
• Allows Follower to view the Sharer’s glucose information
• Allows Follower to get Alerts and Alarms
• Allows the Follower to view the Sharer’s trend graph
What the Follower app does not do:
• Provide treatment advice
• Interact with the Dexcom G5 Mobile App
Receiving Dexcom Follow Invitation Email
After getting the Sharer’s Follow invitation by email, the Follower sets up their smart device.
Glucose Alarm and Alerts
A glucose prompt is a visual message saying “Glucose notification from [Sharer’s name]”
that appears on the screen of the Follower’s smart device. The prompt may include sounds,
depending on their smart devices settings.
Types of prompts your Followers get:
• Low Sensor Glucose Reading
• Urgent Low Sensor Glucose Reading (< 55 mg/dL)
• High Sensor Glucose Reading
Your Follower can change some of the initial settings to fit their needs. The Follower cannot
change your permission settings to see your Trend Graph.
Sharer Status Changes That Notify the Follower
Some Sharer status changes will prompt your Followers.
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• Not Sharing - Sharer decides to temporarily stop sharing
• Removed by Sharer - Sharer removes Follower
• No More Data - Prompt Sent when active glucose sharing is stopped for any reason,
other than the Sharer turning Share “Off”
○○ The Follower should contact the Sharer for more information about the data
interruption
The Follower Dashboard
Figure 13. Follower Dashboard
If you don’t allow your Follower to see your Trend Graph, they will only see your glucose
reading and trend arrow.
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How long ago
the Sharer’s
glucose reading
and trend arrow
were last updated
Sharer’s picture
Sharer’s glucose reading
and trend arrow
Figure 14. Follower Information
If you choose to have your Follower see your Trend Graph, they see:
Sharer’s name
Notification settings
Home icon
Sharer’s
glucose
reading
Trend arrow
Time
duration
setting of
3, 6, 12 or
24 hours
Trend graph
Glucose range
(between high
and low alerts)
Figure 15. Follower Information With Trend Graph
20.8 Troubleshooting
Dexcom Share Troubleshooting
Troubleshooting Status - See the Troubleshooting Status Issues portion of Section 20.6.
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Figure 16. Sharing Status Troubleshooting
Sharing Checklist
To share, you need to:
Make sure your smart device works with the Dexcom G5 Mobile App. To see a list of
supported smart devices and operating systems, go to: dexcom.com/compatibility
• The Dexcom G5 Mobile App is open or running in the background
• Smart device has an active Internet connection (Wi-Fi, 3G, 4G, LTE). The Sharer can
check to see if the Internet connection is working by trying to open a web page on the
Sharer’s smart device
• If on a phone call using your smart device, your CGM information may not upload into
the Share Cloud while on your call
• Airplane Mode turned off
• Do Not Disturb is turned off
• Smart device sound is on in order to hear prompts
• Smart device is sufficiently charged or charging
• Smart device is within 20 feet of the transmitter
• Smart device has 35 MB of available memory
• Refer to the smart device user manual for further instructions
Tips
• Read the Dexcom G5 Mobile CGM System User Guide before using the Dexcom
Share feature
• Always confirm information with a BG meter before you make treatment decisions
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Index
A
E
Alarm, 175
App Recommended Settings, 183
Clearing, 188
Prompts, 178
Receiver Beeps and Vibrations, 184
What is an, 176
Alarm and Alerts
Changing Receiver, 204
Customizing, 195
Alerts, 175
Clearing, 188
Default, 176
Low Repeat/High Repeat, 185
Low/High Glucose, 179,180
Main Menu, 207
Receiver
Default Beep and Vibrations, 184
Rise Rate/Fall Rate, 181, 182
Rise Rate/Fall Rate/Repeat/Signal Loss, 177
What are, 176
Error Messages, 147
Event
Categories, 154
Definition, 153
Events, 153
Entering
App, 162
Receiver, 168
Viewing, 170
C
Calibration, 92
Entering into app, 101
Entering into your receiver, 104
Errors, 106
Preparing for, 100
Prompts, 96, 98, 99
What is it, 92
When to Calibrate, 95
Why is Calibrating important, 92
CGM System
Basic Maintenance, 222
Different Monitoring Methods, 50
Disposal, 228
Overview, 42
Storage, 226
G
Glucose Information
Rate of Change Arrows, 146
Trend Screen, 137, 145
R
Rate of Change Arrows, 138, 146
Receiver
Home Screen, 142
Initial set up, 64
Overview, 46
S
Safety Statement
Contraindications, 19
Indications, 18
Precautions, 21, 23, 24, 25, 27
Warnings, 20, 21, 22, 24, 26
Sensor Insertion
Choosing site, 75
Sensor Session
Attaching transmitter, 80
Definition, 8
Ending, 110
Ending Early
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Index
333
App, 119
Receiver, 121
Ending Seven Day, 111
Inserting sensor, 76
Prepping for Sensor Insertion, 72
Preventing Sensor Failures, 123
Receiver: Starting a Session, 84
Remove Sensor Pod and Transmitter, 124
Starting a, 69
Starting with app, 83
Sensor Session Warmup
Warmup, 90
Signal Loss Alert
Signal Loss, 183, 187, 208
Sound/Vibration Prompts, 116
System Components, 39
T
Technical Information, 237
Transmitter
Attaching, 80
Battery Messages, 127
Connecting/Pairing Transmitter with App, 58
Connecting/Pairing with Receiver, 66
End of Transmitter Battery, 127
Overview, 45
Remove from Sensor Pod, 124
Safety Statements, 24
Troubleshooting, 287
Notes
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
W
________________________________
Warranty, 215
________________________________
________________________________
________________________________
________________________________
________________________________
________________________________
Dexcom G5 Mobile System User Guide
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334
© 2016 Dexcom, Inc. All rights reserved.
Covered by patents www.dexcom.com/patents.
Dexcom, Dexcom Follow, Dexcom G4, Dexcom G4 PLATINUM, Dexcom G5, Dexcom G5 Mobile,
Dexcom Share, Follow Dashboard, and G5 are either registered trademarks or trademarks of
Dexcom, Inc. in the United States and/or other countries. All other product or company names that
may be mentioned in this publication are tradenames, trademarks or registered trademarks of their
respective owners.
Dexcom, Inc.
6340 Sequence Drive
San Diego, CA 92121 USA
Phone: 1.858.200.0200
Tech Support: 1.877.339.2664
Web: dexcom.com
LBL012787 Rev 006 MT22864
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