Your learning journey with Dexcom G6

Follow these simple steps to discover what you need to know about setting up and using your Dexcom G6 real-time Continuous Glucose Monitoring (CGM) System.
Dexcom is here to support you on your journey with us, we’ll show you how to get the best out of your Dexcom G6 and where to find additional help and guidance.
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Your first 10 days with Dexcom G6

Reuse your transmitter
Your transmitter lasts up to 3 months. Reuse it for multiple sensor sessions. Your Dexcom G6 tells you when your transmitter will need to be replaced, starting 3 weeks before. When the transmitter has less than 1 sensor session of battery life left, you will not be able to use it to start a new sensor session.

How to replace your sensor on day 10 when using the app on your smartphone*

How to replace your sensor on day 10 when using a Dexcom receiver

Making diabetes treatment decisions with your Dexcom system readings*

*If your glucose alerts and readings from the Dexcom G6 do not match symptoms or expectations, use a blood glucose meter to make diabetes treatment decisions.
Young girl wearing a Dexcom sensor at school

Information for managing Dexcom in schools

The insightful Dexcom G6 School Guide and the Diabetes Ireland School Guide can help parents and caregivers share the basics of real-time CGM and how to set up a plan for diabetes management for children at school.
  • Dexcom G6 CGM School Guide
  • Diabetes Ireland School Guide
Information for managing Dexcom in Residential Care Settings
This insightful guide provides information for carers on planning care and supporting people living with diabetes using Dexcom rtCGM Systems in all residential care settings including residential homes, assisted living and correctional facilities.
A woman using her mobile phone to share and follow her glucose data

Share and Follow

You can share your glucose data with up to 10 designated people (followers) using the Dexcom Share function of the app. Once your followers have downloaded the Dexcom Follow app to their compatible smart device, they will be able to remotely monitor your glucose data.
It’s easy to share data through the app – simply press ‘connections’ at the bottom of the screen then press the ‘Share’ icon and follow the onscreen instructions.
Man using his mobile phone

Recommended phone settings

Some smartphone settings* can interfere with your Dexcom G6 app. Check our recommended settings to know which ones you should or shouldn’t use.
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Dexcom CLARITY is an important part of your real-time CGM system, helping you to identify glucose patterns.
Download the guide below for instructions on sharing Dexcom CLARITY with your Diabetes Healthcare Team.
Frequently Asked Questions
Q. Can I shower or swim while wearing my Dexcom G6?
Once snapped into place, the transmitter is water-resistant.§ Swim, shower, take a bath: no need to worry about water and your Dexcom G6 – just leave your display device in a dry area. If you are in water, your display device needs to be closer than 6 meters to get sensor readings.
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Looking for help?

Having problems with your device or replacing your sensor? Donʼt worry, our Technical Support Team are here to help.
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Beyond the basics

We hope your first 10 days have gone well and that you’re getting to grips with the system. Are you ready now to move on and find out how you can make the most of your Dexcom G6?
This page is for supplementary purposes only, please refer to your IFU for complete instructions.
*For a list of compatible smart devices, visit
† Internet connectivity required for data sharing. Following requires the use of the Follow App. Followers should always confirm readings on the Dexcom App or Receiver before making treatment decisions.
‡ An internet connection is required to send glucose data to Dexcom CLARITY via a compatible smart device:
§ Dexcom G6 sensor and transmitter are water-resistant and may be submerged under eight feet of water for up to 24 hours without failure, when properly installed.
Ava and Rebecca are sponsored spokespersons of Dexcom.

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