Dexcom G7 User manual

User Guide
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1 • Welcome 1
Get started 1
New since G6 2
Contact information 4
2 • Safety Information 5
Dexcom G7 CGM System safety statements 5
Share and Follow safety statements 13
Risks and benefits 14
Glossary 18
3 • Display Device Screens 25
Glucose information 25
Sensor reading and trend arrow 28
Navigation 32
See trend graph history 36
Tips from banners, tooltips, and icons 37
4 • Treatment Decisions 39
When to use your BG meter instead of G7 39
When to watch and wait 41
Using the trend arrows 41
Table of Contents
Table of Contents | Dexcom G7 User Guide i

Treat with professional advice 42
Practice making treatment decisions 43
5 • Alerts 49
Low alerts 49
High alert 51
Rising Fast and Falling Fast alerts 51
System alerts 52
Signal Loss alert 52
Brief Sensor Issue alert 53
Technical alerts 53
Responding to app alerts 54
Changing all alerts 56
Changing one alert 58
Adding a second alert profile in your app 62
Optimizing alerts 63
6 • Set Up Displays, Medical Device, and Siri 67
App 67
Dexcom receiver 69
Quick Glance (Android) 70
Siri (Apple) 71
Smartwatch (Apple) 71
7 • App Connections 73
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Sensor 73
Share and Follow 74
Dexcom Follow app 75
Health apps 80
8 • Events and History 81
Using events to manage glucose 81
Tracking events 81
Logging BG meter values or calibrating 83
9 • Reports 85
10 • Next Sensor Session 87
Sensor transition 87
Remove your sensor 89
Remove old sensors from Bluetooth connections in phone (optional) 90
11 • Troubleshooting 93
Accuracy and calibration 94
Adhesive patch 97
Can't hear alerts 99
Can't see receiver screen 100
Common alerts 101
Gap in trend graph 107
Recharge receiver 108
Table of Contents | Dexcom G7 User Guide iii

Travel with G7 108
Update display device 109
Water and G7 110
X-ray, CT scan, or radiation therapy 110
A • Clarity 113
B • Taking Care of Your G7 115
G7 maintenance 115
Storage 116
System disposal 117
C • Warranty 119
Dexcom receiver limited warranty 119
Dexcom sensor limited warranty 121
D • Terms of Use and Open Source Software Code 123
Terms of use 123
Open source software code 123
E • Technical Information 125
Device performance characteristics 125
Product specifications 154
Radio regulations compliance 163
F • Packaging Symbols 165
iv

G • Index 169
Table of Contents | Dexcom G7 User Guide v

1 • Welcome | Dexcom G7 User Guide 1
1 • Welcome
Thanks for choosing the Dexcom G7 Continuous Glucose Monitoring (CGM) System
(G7)! Using this medical device, you'll see your glucose readings on your display
device just by wearing a tiny sensor!
Here are some of the benefits of using G7 to manage your glucose:
lNo more fingersticks: G7 allows you to make treatment decisions without
fingersticks. (If your glucose alerts and readings from the G7 do not match
symptoms or expectations, use a blood glucose meter to make diabetes treatment
decisions.)
lPredict and prevent highs and lows: With G7, you have the information needed
to keep your glucose in range, you can customize your alert schedule, and you get
a 20-minute warning when your glucose is quickly heading towards 55mg/dL.
lStay informed: See the results of your actions in the summary reports and keep
improving.
So let's get started!
Get started
To set up your G7, use the instructions in your Start Here
guide.

This G7 User Guide introduces you to the display device screens, leads you through
making treatment decisions, and shows you how to move to your next sensor session.
Each sensor session lasts up to 10 days, plus a 12-hour grace period at the end.
In addition, this guide shows you where to customize your alert sounds, how to get
your glucose information to your support team, how to make a second alert profile in
your app, and much more.
Images are representational. Your display device screens and components may look
different.
The app runs on both Android and Apple smart devices. For supported smart devices
and operating systems, go to dexcom.com/compatibility.
New since G6
New features include:
lAll new components and app
lNew alert sounds and sound options
lGlucose summary reports on your display device
All new components and app
Sensor and patch
lStreamlined all-in-one sensor with built in disposable transmitter.
lShorter warmup — less than 30minutes.
lExtra 12-hour grace period at the end of the sensor session gives you flexibility to
change your sensor at your convenience.
lSmaller sensor and shorter sensor wire for your comfort.
lPatch is smaller — half the size of G6.
lOverpatch comes with each sensor. You must use it to keep the sensor on your
body.
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1 • Welcome | Dexcom G7 User Guide 3
Applicator
lSmaller size — less plastic waste
lFast and easy to insert sensor
App
lRedesigned app to make it even easier to manage your glucose
lFaster set up
Receiver (optional)
lNew look and feel
lSmaller size
For more information on setting up G7, go to the Start Here guide. Find it in the sensor
box (for setting up the app) or receiver box (for setting up the receiver). For more
information on the grace period, go to the Next Sensor Session chapter.
New alert sounds and sound options
lTurn off all alert sounds: Change one setting to quickly make all alerts vibrate only
lExtra alert profile on app: Schedule it (like G6) or turn it on and off anytime
lMore alert sounds: Pick the sounds that work best for you
For more information about alerts, go to the Alerts chapter.
Glucose summary reports on your display device
lSummary reports: Includes summary reports of your glucose information (over the
last 3, 7, 14, 30, and 90 days). Use them to identify trends and opportunities.
For more information about reports, go to the Reports chapter and the Clarity
appendix.

Contact information
Dexcom has three support teams to help you. Go to dexcom.com/contact to connect
with them or call:
1-888-738-3646
In the app, you can also go to Profile > Contact to get help.
Corporate office
Dexcom address:
6340 Sequence Drive, San Diego, CA 92121
User Guide
You can also see the G7 User Guide at:
lApp: Profile > Help
ldexcom.com/guides
lFree printed copy: Order on website or call:
1-888-738-3646
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2 • Safety Information | Dexcom G7 User Guide 5
2 • Safety Information
Dexcom G7 CGM System safety statements
Important user information
Read the indications, warnings, precautions, and instructions for your G7. If you don't,
you may have inaccurate sensor readings, missed alerts, and might miss a severe low
or high glucose event.
Getting familiar with G7 could take days, weeks, or even months.
Dexcom doesn't recommend continuous glucose monitoring for people who can't or
won't:
lUse their BG meter to test their blood glucose if their symptoms don’t match their
sensor readings
lKeep in touch with their healthcare provider about diabetes management

Indications for use
The Dexcom G7 Continuous Glucose Monitoring System (Dexcom G7 CGM System or
G7) is a real time, continuous glucose monitoring device indicated for the
management of diabetes in persons 2years and older.
The Dexcom G7 CGM System is intended to replace fingerstick BG testing for diabetes
treatment decisions. Interpretation of the Dexcom G7 CGM System results should be
based on the glucose trends and several sequential sensor readings over time. The
Dexcom G7 CGM System also aids in the detection of episodes of hyperglycemia and
hypoglycemia, facilitating both acute and long-term therapy adjustments.
The Dexcom G7 CGM System is also intended to autonomously communicate with
digitally connected devices, including automated insulin dosing (AID) systems. The
Dexcom G7 CGM System can be used alone or in conjunction with these digitally
connected medical devices for the purpose of managing diabetes.
Contraindications
No MRI/CT/diathermy — MR unsafe: Don't wear any Dexcom G7 CGM
System component during magnetic resonance imaging (MRI) or
high-frequency electrical heat (diathermy) treatment. However, it's safe to
have a CT scan if you keep the sensor out of the scanned area and cover the
sensor with a lead apron during the scan.
MR
The Dexcom G7 CGM System hasn't been tested in those situations when used during
an MRI scan, diathermy, or in the scanned area of a CT scan. The magnetic fields and
heat could damage components of the Dexcom G7 CGM System, which may cause
inaccurate sensor readings or prevent alerts. Without sensor readings or alerts, you
might miss a severe low/high glucose event.
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2 • Safety Information | Dexcom G7 User Guide 7
Warnings
Read product instructions before you use your Dexcom G7 CGM System
Don't ignore low/high symptoms: Use your BG meter to make treatment decisions
when your sensor readings don't match your low/high symptoms. If needed, seek
immediate medical attention.
No number, no arrow, no CGM treatment decision: Use your BG meter to make
treatment decisions when your Dexcom G7 CGM System doesn't show both a number
and trend arrow as well as during the 30-minute sensor warmup period.
Don't use if you are on dialysis, or critically ill: The Dexcom G7 CGM System
performance hasn't been evaluated in these populations and sensor readings may be
inaccurate.
Sensor wire breaks off: Don't ignore broken or detached sensor wires. If this
happens, please contact 24/7 technical support (in the app, go to Profile > Contact).
If a sensor wire breaks off or detaches under your skin and you can't see it, don't try to
remove it. Contact your healthcare provider if you have symptoms of infection or
inflammation — redness, swelling, or pain — at the insertion site.
Where to insert — arm or buttocks: Don’t wear it on other sites as it may not work
as expected. If you wore G6 sensors on your abdomen, wear G7 sensors on the back
of your upper arm. Children from 2 to 6 years old can also choose their upper
buttocks.
Where to store: You can store your sensors at room temperature or in your
refrigerator, between 36° F and 86° F, but not in the freezer.
Inspect: Don't use any damaged or cracked Dexcom G7 CGM System component
because it may not work correctly and could cause injuries from electrical shocks.
Use as directed: The Dexcom G7 CGM System is small and may pose a choking
hazard if swallowed.

Check settings: Make sure your smart device volume is turned up, not muted, and
the speaker works. When you have headphones connected, alerts will only sound
through the headphones, not on your smart device speaker.
Your glucose alerts sound and display information by default even when your volume
is low or muted.
Quiet Mode (Vibrate): When this setting is enabled all your Dexcom G7 CGM System
alerts will vibrate. Your Urgent Low Glucose and technical alerts will still escalate to
sound if not acknowledged.
Bluetooth® wireless technology: Make sure your Bluetooth is on. If not, you won't get
readings or alerts.
Notifications:
lMake sure your smart device settings follow Dexcom’s recommended settings.
Certain phone settings such as Android's Digital Wellbeing and Apple’s Screen
Time may prevent notifications if enabled.
lAllow Dexcom G7 CGM System app notifications to show on your Lock screen.
This will ensure you receive Dexcom notifications and allow you to see
notifications without unlocking your phone.
lAndroid users must allow Location Permission, Do Not Disturb Access, and
Notifications to use the app.
lApple users must allow Location Permission and Critical Alerts to use the app.
Battery: Keep the battery charged.
Compatibility: Before upgrading your smart device or its operating system, check
dexcom.com/compatibility. Automatic updates of the app or your device operating
system can change settings or shut down the app. Always update manually and verify
correct device settings afterward.
While connected to the internet, the app checks periodically and will display a
message if it’s not compatible (or no longer compatible) with your phone or your
phone’s operating system (OS). The message may include a timeframe for updates.
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2 • Safety Information | Dexcom G7 User Guide 9
Time: Let the date and time on your smart device automatically update when you
travel across time zones or switch between standard and daylight saving times. Don’t
manually change your smart device time because you may not get readings or alerts
and it may make the time on the trend screen wrong.
Use electrical equipment as directed:
Use of accessories, cables, adapters, and chargers 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.
Portable radio frequency communications equipment (including peripherals such as
antenna cables and external antennas) should be used no closer than 12 inches to any
part of the Dexcom G7 CGM System including cables specified by the manufacturer.
Otherwise, degradation of the performance of this equipment could result.
Use of this equipment adjacent to, or stacked with, other equipment should be
avoided because it could result in improper operation.
Not using supplied USB charger and cable may cause the receiver battery to not
charge. Don't use if the supplied USB charger or cable is damaged. Store supplied
USB charger and cable safely. Misuse of the USB cable can be a strangulation risk.
Do not modify
No modifications to the Dexcom G7 CGM System are allowed.
Precautions
Secure internet: Only use a cellular internet connection, a trusted Wi-Fi network (like
your home or office), or use a secure internet connection such as a VPN service when
using your G7 system.
Don’t use unsecured public Wi-Fi such as guest networks in other's homes,
restaurants, schools, libraries, hotels, airports, airplanes, etc. Those could expose
your G7 system to viruses or hacking.

Check accessories: When using accessories such as headphones, Bluetooth
speakers, or smartwatches, you may get your alerts on only one, not all. After
connecting any accessories, make sure that your smart device settings allow you to
continue receiving alerts.
Clean and dry skin: If your insertion site and hands aren't clean and dry, you run the
risk of infection and the sensor not sticking well. Clean your insertion site with alcohol
wipes to prevent infections. Before insertion and during your sensor session, don't
apply insect repellent, sunscreen, perfume, or lotion on your insertion site or sensor.
This may cause the sensor to not stick well or could damage your Dexcom G7 CGM
System.
Be accurate, be quick: If you calibrate your Dexcom G7 CGM System using your BG
meter, enter the BG value on your meter within five minutes of measuring your BG.
Use fingertips: Use a BG sample from your fingertips when calibrating as blood
glucose from other places may be less accurate and not as timely. Calibration is not
required but you can do optional BG calibration to align with your meter.
Don't start past the Use By Date: Don’t start a sensor past its Use By Date
(YYYY-MM-DD) because it may give incorrect results. You can start a new sensor on or
before its Use By Date. This gives you full wear.
Check package: Don't use your Dexcom G7 CGM System if the applicator and/or
sterile cap has been damaged or opened, because it might cause an infection. Don't
remove cap until ready for insertion.
Where to insert — things to check: The Dexcom G7 CGM System insertion safety
guard is enabled until you press the Dexcom G7 CGM System applicator down against
your skin. Only do this when ready to insert.
Change your insertion site with each sensor to allow the skin to heal.
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2 • Safety Information | Dexcom G7 User Guide 11
Avoid areas:
lWith loose skin or without enough fat to avoid muscles and bones.
lThat get bumped, pushed, or you lie on while sleeping.
lWithin 3 inches of infusion or injection site.
lNear waistband or with irritations, scarring, tattoos, or lots of hair. If needed, trim
site with electric clippers.
Use correct components: Dexcom G7 CGM System components aren't compatible
with any previous Dexcom products. Don't mix with different generations.
Going through security check point: You can wear the Dexcom G7 CGM System
sensor for the walk-through metal detector and Advanced Imaging Technology (AIT)
body scanner. If you do, use your BG meter for treatment decisions until you leave the
security area. This is because the Dexcom G7 CGM System hasn’t been tested with
every x-ray and security scanner and you may not be able to bring a display device.
You can also ask for hand-wanding or full-body pat-down and visual inspection
instead of going through any walk through body scanners or putting any part of the
Dexcom G7 CGM System in the baggage scanning machine.
Interfering substance risks
lHydroxyurea precaution
Hydroxyurea is a medication used in the treatment of diseases including cancer
and blood disorders; it is known to interfere with sensor readings.
If you are taking hydroxyurea, your sensor readings will be higher than your actual
glucose, which could result in missed hypoglycemia alerts or errors in diabetes
management, such as giving yourself a higher dose of insulin due to falsely high
sensor glucose values. The level of inaccuracy depends on the amount of
hydroxyurea in your body. Don't use your G7 System for diabetes treatment
decisions if you are taking hydroxyurea. Talk to your physician about alternative
glucose monitoring approaches.

lAcetaminophen precaution
In previous generations of Dexcom CGM systems (G4/G5), acetaminophen could
affect your sensor readings, making them look higher than they really were.
However, with the Dexcom G7 CGM System, you can take a standard or maximum
acetaminophen dose of 1 gram (1,000 mg) every 6hours and still use the sensor
readings to make treatment decisions. Taking higher than the maximum dose of
acetaminophen (e.g. > 1 gram every 6hours in adults) may affect the sensor
readings and make them look higher than they really are.
Keep your sensor close to display device: Keep your sensor and display device
within 20feet with no obstacles between them. Otherwise, they might not be able to
communicate.
Get alerts on display device you use: To get your alerts, set them on the display
device you use. Your receiver won't get the alerts you set in your app. Likewise, your
app won't get the alerts you set on your receiver.
Display device is on: Make sure your display device is turned on or you won't receive
sensor readings or alerts.
Test speaker and vibrations: Test your receiver speaker and vibrations regularly.
To make sure the speaker and vibrations work, plug in the receiver to charge. The
Speaker Test screen appears for a few seconds. Follow the directions on the screen to
test the speaker and vibrations. If it doesn't beep and vibrate, contact technical
support (in the app, go to Profile > Contact) and use your app or BG meter until the
receiver is fixed.
Keep receiver clean and dry: Don't submerge your receiver in water and don't get
dirt or water in the USB port. That could damage it.
Cautions
Requires prescription: U.S. law restricts the sale of the Dexcom G7 CGM System to
sale by, or on the order of, a physician.
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2 • Safety Information | Dexcom G7 User Guide 13
Share and Follow safety statements
Important user information
Dexcom Share (Share) lets you send your sensor information from your app to your
Followers’ smart devices (Dexcom Follow app). Read the important user information
and warnings below to find out how you can safely use this app feature.
Keep followers informed: Use Share to send your sensor information from your
smart device to your Followers’ smart devices.
Use as secondary notice: Your Followers’ information is always older than yours.
Use your current information to manage your diabetes, not your Followers’
information. The information they get isn't meant to be used for treatment decisions,
analysis, or teaching. Followers can't change your information.
Warning
Use your Dexcom G7 CGM System to make treatment decisions: Don't use
Followers’ information for treatment decisions, like treating for a low or dosing for a
high. Follow your Dexcom G7 CGM System instructions to make treatment decisions.
Follow healthcare provider advice: Share isn't intended to replace self-monitoring
practices as advised by your healthcare provider.