Your learning journey with
Dexcom ONE
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.
Your first 10 days with Dexcom ONE
Reuse your transmitter
Your transmitter lasts up to 3 months. Reuse it for multiple sensor sessions. Your Dexcom ONE 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. Remember to ensure your transmitter is added to your repeat prescription requests.
How to Replace Your Sensor on Day 10
Making diabetes treatment decisions with your Dexcom system readings‡
‡ 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.
Information for managing Dexcom in schools
Our insightful 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.
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.
Dexcom ONE In-App Reports
Dexcom CLARITY§
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.
§ 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.
Frequently Asked Questions
Q. Can I shower or swim while wearing my Dexcom ONE?
Once snapped into place, the transmitter is water-resistant.‡ Swim, shower, take a bath: no need to worry about water and your Dexcom ONE – 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.
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
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 ONE?
*For a list of compatible smart devices, visit https://dexcom.com/compatibility.
† An internet connection is required to send glucose data to Dexcom CLARITY via a compatible smart device: https://dexcom.com/en-GB/compatibility.
‡ Dexcom ONE 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.
‡ 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.
§ 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.
†† Compatible smart device sold separately.
† An internet connection is required to send glucose data to Dexcom CLARITY via a compatible smart device: https://dexcom.com/en-GB/compatibility.
‡ Dexcom ONE 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.
‡ 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.
§ 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.
†† Compatible smart device sold separately.