Introduction to Dexcom ONE CGM System

Setting Up Sharing and Dexcom Clarity

How do I log in to Dexcom Clarity?

You must have a Dexcom account to use Dexcom Clarity. You must use the same Dexcom account for all your Dexcom devices
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How do I get to Dexcom Clarity?

Go to from an internet browser with internet connection. Review Clarity's list of computer and internet requirements if needed.

CGM and Daily Life

What is Continuous Glucose Monitoring (CGM)?

Dexcom Continuous Glucose Monitoring (CGM) tracks glucose levels throughout the day and night and can alert you if your levels go too high or low.

Common Dexcom CGM Questions

How does Dexcom ONE CGM System work?

Continuous Glucose Monitoring (CGM) systems track glucose levels throughout the day.

Will using Dexcom ONE change my diabetes management routine?

If you're already familiar with continuous glucose monitoring (CGM) systems, Dexcom ONE may or may not notably affect your day-to-day routine.

What are the benefits of using Continuous Glucose Monitoring (CGM)?

Zero fingersticks!* Designed to deliver accurate glucose readings without calibrations: Enjoy the freedom of managing your diabetes without having to prick your fingers! The Dexcom ONE Continuous Glucose Monitoring system is designed to deliver accurate glucose readings without calibrations. It eliminates the need to take fingerstick measurements using a Blood Glucose Meter.*

What is the difference between a Dexcom CGM sensor glucose value and blood glucose value (BGV)?

Dexcom CGM systems measure the glucose levels in the interstitial fluids just beneath your skin. Blood glucose meters measure glucose levels in your blood.

Managing Your Online Account

How do I create a Dexcom user account?

To create an online account with Dexcom, go to

Who Can Use Dexcom CGM

How do I get Dexcom on prescription?

To find out if you are eligible to receive a Dexcom CGM System on the NHS talk to your Healthcare Professional. You can learn more about NHS funding for Dexcom.

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