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Dexcom G7: How it works

Powerful glucose monitoring that’s also easy to use2

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The Dexcom G7 Continuous Glucose Monitoring System

Dexcom G7 CGM System overview

Our most comfortable wearable yet is 60% smaller* and can be worn discreetly on the upper arm.1

Dexcom G7 app overview

Know where your glucose numbers are at and where they’re headed, get high and low alerts, track your goals, and more with our new app experience.

The most accurate CGM system2 just got better

Relentless innovation, that's the Dexcom difference.
We’re always working on making Dexcom G7 more powerful, more useful, and more convenient. Our latest updates give you more freedom, a stronger connection, and a better understanding of how your daily activities impact your glucose.

Direct to Apple Watch*

Manage diabetes, hands-free. Connect your sensor directly to your Apple Watch so you can leave your iPhone behind and still see your glucose numbers. 

Enhanced event logging

Automated activity logging, simplified meal logging, and new medication logging help you better understand how activity, food, and medications impact your glucose in real time, so it's easier to make informed decisions and gain more control.

Enhanced Bluetooth with Rapid Reconnect

The Dexcom G7 sensor now has enhanced Bluetooth with Rapid Reconnect. It delivers a 65% farther§,1 range and a quicker reconnection when you go out of range, keeping you connected longer so you have less time without your numbers.
Dexcom sensor, smartphone and smart watch showing app screen

The most accurate CGM system2

With an 8.2% overall MARD for adults and an 8.1% MARD for children,1 Dexcom G7 is the most accurate CGM system available.2
We’re always working on making Dexcom G7 more powerful, more useful, and more convenient. Our latest updates give you more freedom, a stronger connection, and a better understanding of how your daily activities impact your glucose.
MARD (mean absolute relative difference) is a statistical measure of CGM accuracy; the lower the number the better.
sensor on womans arm with phone app screen in view

Your glucose numbers without fingersticks||

A small wearable sends real-time glucose readings to the Dexcom G7 app or receiver every 5 minutes, no fingersticks|| or scanning required. You’ll see where you are, where you’re headed, and where you’ve been, making it easier to make better diabetes management decisions.
||Fingersticks required for diabetes treatment decisions if symptoms or expectations do not match readings.
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Customizable alerts that work for you.

The Dexcom G7 app gives you the flexibility to customize alert sounds and settings to best fit your lifestyle and needs.
Smart device sold separately.*
urgent low soon alert screen

Urgent low soon alert

Provides a 20-minute advance warning of when you’ll reach 55 mg/dL so that you can act quickly and avoid a potential hypoglycemic event.
silence all alert notification on app

Silence all

With this setting, all alerts will not sound or vibrate for up to 6 hours. Visual notifications will still appear on the lock screen.
delay first alert screen option on dexcom app

Delay 1st alert

Enables you to delay your first High alert until your sensor reading is high for a while. You choose how long.
quiet mode screen in dexcom app

Quiet mode

When this setting is enabled all your G7 alerts will vibrate. Your Urgent Low Glucose and Technical Alerts will still escalate to sound if not acknowledged.
clarity screen on smartphone

Track your progress. Reach your goals.

You can track your progress by viewing the integrated Dexcom Clarity card, which provides insights into your glucose patterns directly in the Dexcom G7 app.§, || The more you know, the easier it is to stay in range, which can lower your A1C.
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Dexcom G7:

1: All-in-one wearable sensor
2: Overpatch
3: Optional Dexcom receiver
Want the Dexcom G7 app on your smartphone?
  • App Store
  • Google Play

Dexcom CARE virtual program

Expand your Dexcom CGM knowledge. Attend a free virtual session hosted live by Dexcom CARE. For more information on session topics and to sign up click the link below.
  • Learn about Dexcom CARE classes
dexcom sensor

Get started with Dexcom G7

Our telehealth option makes it easier than ever

If you’re interested in getting on Dexcom G7, the next step is to get a prescription. If you don’t have a doctor or prefer to talk to one in the comfort of your home, book a telehealth appointment now.
If you’re currently a Dexcom G6 user, click here to learn how to upgrade.

Our experts are here to help.

||Fingersticks required for diabetes treatment decisions if symptoms or expectations do not match readings.
Compatible smartphone is required to pair a new Dexcom G7 sensor with a compatible Apple Watch. To use Share/Follow the smartphone must be within 33 feet of the Dexcom G7. Automated activity activity and medication logging available in Dexcom G7 app only. §Upgraded Bluetooth has a 33 ft bluetooth range, 13 feet further than the previous 20 ft range. An internet connection is required to send data to Dexcom Clarity. #Do not use Dexcom Clarity for treatment decisions such as dosing insulin. The user should follow instructions on the continuous glucose monitoring system. **Receiver required for Medicare beneficiaries.
1 Dexcom G7 CGM System User Guide. 2024. 2 Dexcom, data on file, 2024.
BRIEF SAFETY STATEMENT: Failure to use the Dexcom Continuous Glucose Monitoring System and its components according to the instructions for use provided with your device and available at https://www.dexcom.com/safety information and to properly consider all indications, contraindications, warnings, precautions, and cautions in those instructions for use may result in you missing a severe hypoglycemia (low blood glucose) or hyperglycemia (high blood glucose) occurrence and/or making a treatment decision that may result in injury. If your glucose alerts and readings from the Dexcom CGM do not match symptoms, use a blood glucose meter to make diabetes treatment decisions. Seek medical advice and attention when appropriate, including for any medical emergency.
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