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Glucose levels, anytime, anywhere with Dexcom ONE

Finger pricks only give a snapshot in time, whereas with Dexcom ONE, you get the full picture of your glucose levels – so you can make more confident treatment decisions in the moment.†,1
Dexcom ONE glucose monitor for type 1 or type 2 diabetes
One small device
One simple app
Managing your diabetes is much easier|| with Dexcom ONE for people with Type 1 or Type 2 diabetes. A small wearable sensor that sends accurate2,3 glucose numbers 24/7, right to your smartphone§ or receiver – all with no finger pricks* or scanning.
So, you’ll always know how you’re doing, no matter what you’re doing.
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Alerts to help you spend more time in range

Customisable alerts let you know whenever your glucose falls outside of your pre-set high and low glucose levels, so you can take action.
Sometimes you can have readings that trend higher after meals. Dexcom One’s Delay 1st Alert feature means you can choose after how much time want to be alerted for high glucose, helping reduce alarm fatigue.​
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Get motivated and track your progress with insights

Dexcom Clarity makes it easier to view insights and trends, so you can see the dierence small changes make. You can view the clarity card directly in the app to keep track of your time-in-range. You can even share Clarity data with your Diabetes Healthcare Team for more efficient appointments# – leaving more time to discuss other matters.
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See the difference small changes can make

Keep track of your glucose levels in real-time and discover how your food choices, exercise routine, and stress levels influence your numbers – so you can see the positive impact small changes make.
Spend more time in range,**,††,4,5 reduce HbA1c,††,4-6 and improve your overall wellbeing.††,6,9

Intuitive and tailored to you and your lifestyle

Dexcom ONE makes it easier to manage your diabetes.|| It’s simple to use and apply with the push of a button.2,3 Wear it your way, with multiple locations – your upper arm, abdomen, or buttocks.‡‡
70% of people said Dexcom ONE is easy to use.7

Dexcom is available on the NHS

NICE (The National Institute for Health and Care Excellence) have guidelines on funding CGM for some people with diabetes. For people with insulin-treated type 2 diabetes, a glucose sensor can be considered, based on certain criteria. Read the full NICE guidance here.
Your Diabetes Healthcare Team will have their own local policy which they use in line with the NICE guidelines. Speak to your Diabetes Healthcare Team at your next visit and ask what the guidelines mean for you.
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Dexcom ONE glucose monitor for type 1 or type 2 diabetes
Meet Dexcom ONE
Dexcom ONE Sensor
  • Measures glucose levels just under the skin
  • Can be used for up to 10 days
  • Is water-resistant (e.g. shower, swimming)||||
Dexcom ONE transmitter
  • Sends glucose readings every 5 minutes to your compatible smartphone§
  • Lasts 90 days - will be re-used across multiple sensors
Dexcom ONE App on a compatible smartphone§
  • Provides glucose readings and High/Low alerts
  • Available for free on Apple or Android app stores
  • Compatible smartphone required
  • Dexcom ONE can also be used with an optional receiver

Frequently Asked Questions

Dexcom ONE is the right CGM for you if:

You have type 1 or type 2 diabetes and are looking for an easy and accessible CGM system.​
Explore the Dexcom CGM Range
There's a Dexcom CGM for all people with Diabetes. Explore our products to find the right one for you.
* If your glucose alerts and readings Dexcom ONE do not match symptoms or expectations, use a blood glucose meter to make diabetes treatment decisions.
† Your transmitter and display device should be within 6 meters of each other.
‡ Arrow must be displayed with glucose number to make treatment decisions.
§ Compatible smart devices sold separately. For a list of compatible devices, visit dexcom.com/compatibility.
|| Compared to Blood Glucose Monitoring.
¶ A receiver can be acquired as an optional display device.
# Internet connection required to send data to Dexcom Clarity.
** Time in range was defined as 3.9-10.0 mmol/L.
†† Results obtained with a prior generation of a Dexcom rtCGM system. Similar results expected with Dexcom ONE given similar performance and feature sets and better usability.
‡‡ Upper Buttocks 2-17 years old.
§§ Access to Dexcom real-time CGM systems can vary in dierent parts of the UK. Talk to your diabetes healthcare team to find out more about access and which product would work best for you.
||||When properly installed, the Dexcom ONE sensor is water-resistant for up to 2.4 meters for 24 hours. The Dexcom ONE receiver is not water-resistant.
1 Wadwa RP, et al. Diabetes Technol Ther. 2018;20(6):395-402.
2 Shah V et al. Diabetes Technol Ther. 2018;20(6):428-433.
3 Results obtained with Dexcom G6, which uses the same applicator and sensor (and algorithm) as Dexcom ONE.
4 Beck RW et al. JAMA. 2017;317(4):371-378.
5 Beck RW et al. Ann Intern Med. 2017;167(6):365-374.
6 Lind M et al. JAMA. 2017;317(4):379-387.
7 D1 Post-Launch Research in BELL countries, May 2022. N=233.
8 Type 1 diabetes in adults: diagnosis and management. NICE guideline [NG17]. https://www.nice.org.uk/guidance/ng17.
9 Diabetes (type 1 and type 2) in children and young people: diagnosis and management. NICE guideline [NG18]. https://www.nice.org.uk/guidance/ng18.
10 Type 2 diabetes in adults: management. NICE guideline [NG28].


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