Your learning journey with
Dexcom ONE+
Follow these simple steps to discover what you need to know about setting up and using your Dexcom ONE+ 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 ONE+ and where to find additional help and guidance.
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Your first 10 days with Dexcom ONE+

Don’t forget to remind your Healthcare Professional to add your Dexcom ONE+ onto your repeat prescription requests.

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

Making diabetes treatment decisions based on your Dexcom readings||

Young  person wearing a Dexcom sensor at school

Managing Dexcom in schools

Our School Guide is here to help parents and carers share the basics of Dexcom ONE+ with their child’s school, and set up a plan for better diabetes management for children at school.
§ Dexcom ONE+ sensor is waterproof and may be submerged under eight feet of water for up to 24 hours without failure, when properly installed.
  • School guide
Teenager checking out CGM data on their mobile device

Information for teenagers and adolescents

Gaining independence with your diabetes management is important as you move forwards from school to university or to your chosen career pathway.  There are many resources available to help you including support groups, online advice to help you understand your diabetes symptoms and to help you manage hypo and hyperglycaemia.   Don't forget to check our Instagram page to listen to our Dexcom Warriors and how they manage aspects of their own diabetes.
You can also stay up to date with our Diabetes Self-Management blog, which provides diabetes 101 information to help people with type 1 and type 2 diabetes live better lives. -  https://www.dexcom.com/en-gb/blog
There are many other resources for young people to support with living life with diabetes:
checking glucose on the Dexcom app
Managing Dexcom in residential settings
Our Residential Care Guide advises those planning care and supporting people living with diabetes using Dexcom CGM systems in all residential care settings, including residential homes, assisted living and correctional facilities.
*Smart devices sold separately.
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 people (followers) using the Dexcom Share function on 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 also 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.
*Smart devices sold separately.
A person scrolling on a smartphone
Recommended phone settings
Some smartphone* settings can interfere with your Dexcom ONE+ app. Check our recommended settings to know which ones you should or shouldn’t use.
*Smart devices sold separately.
Dexcom Clarity on a mobile phone - Smart devices sold separately.*
Dexcom Clarity
Dexcom Clarity is an important part of your 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 get Dexcom ONE+ wet?
The Dexcom ONE+ sensor is waterproof up to 2.4 meters§ and continues to take automatic readings while submerged. You can get the sensor wet while bathing, showering or swimming, but please note that if you’re in or near water, your compatible display device may need to be closer than 6 meters to get sensor readings, or you may not get sensor readings until you get out.

Looking for help?

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

Beyond the basics

We hope your first 10 days have gone well and that you’re getting to grips with your system. When you’re ready, you can now find out how to make the most of Dexcom ONE+.
This page is for supplementary purposes only, please refer to your IFU for complete instructions.
*For a list of compatible smart devices, visit
dexcom.com/Compatibility
† 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 while uploading to Dexcom Clarity.
§ Dexcom ONE+ sensor is waterproof and may be submerged under eight feet of water for up to 24 hours without failure, when properly installed.
|| If your glucose alerts and readings from the Dexcom ONE+ do not match symptoms or expectations, use a blood glucose meter to make diabetes treatment decisions.
Rebecca is a sponsored spokesperson of Dexcom.

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