Say hello to Dexcom ONE

Our discreet Dexcom ONE sensor sends accurate†,1 glucose numbers 24/7, straight to your smartphone or receiver.§ No finger pricks.* No scanning ever. So, you’ll always know how you’re doing, no matter what you’re doing.
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The smart ONE
With accurate†,1 continuous readings you can rely on, Dexcom ONE enables you to make confident treatment decisions even when your glucose levels are changing rapidly.7
Our customisable alerts notify you of high or low glucose levels. You can customise further by using our unique Delay 1st High option to tailor your alerts to your meal and insulin dosing schedule. This feature alone is shown to reduce rebound hypos by around 19%.6

The easy†,1 ONE

The Dexcom ONE system features a simple, easy†,1 to apply sensor and all-in-one mobile app that displays your real-time data and past trends, as well as in-app training for an easy start.
Dexcom ONE is the only rt-CGM that can be worn in up to 3 different wear locations# for added discretion - arm, abdomen, and upper buttocks.
No wonder why, over 90% of users said Dexcom ONE is easy to use.††

The effective†,##,2-4 ONE

Dexcom ONE gives you access to current numbers and past trends, enabling you to better understand the impact of food, exercise, and stress on your glucose numbers. Our in-app Clarity card helps you track how small daily changes impact your long-term health.†††
Dexcom ONE use is clinically proven to lower HbA1c and increase time in range##,2-4 - helping you to enjoy more of the things you love.
Meet Dexcom ONE
1. Dexcom ONE sensor
  • Measures glucose levels just under the skin.
  • Can be used for up to 10 days.
  • Most water-resistant sensor - up to 2.4m for up to 24 hours. Swim, sweat, shower without thinking about it.
2. Dexcom ONE transmitter
  • Sends glucose real-time readings to your compatible smartphone.
  • Lasts 90 days for continued use across multiple sensors.
3. Dexcom ONE app or receiver§
  • Displays glucose readings and personalised high and low alerts on your smartphone or receiver.
  • To use the Dexcom ONE app on a mobile device you will need a compatible smartphone.

Proven to help meet your health goals

Confident diabetes management

Dexcom ONE is shown to improve overall well-being and treatment satisfaction for all people with diabetes.†,##,2

Increase time in range**,||,5

Dexcom ONE is clinically proven to significantly increase time in range.†,2-4 The more time you spend in range, the better you may feel and the more you can do.

Reduce Hypoglycaemia and improve HbA1c

Clinically proven to reduce Hypoglycaemia and lower HbA1c.##,2-4

See Dexcom ONE in action

Watch the video below to see how Dexcom ONE works and why 93% of users are satisfied.

The Dexcom ONE+ Continous Glucose Monitoring System is available for purchase.

From 1st January 2022, the Estonian Health Insurance Fund will reimburse the Dexcom ONE Continuous Glucose Monitoring System for people with Type 1 diabetes.

Stay connected with the Dexcom ONE mobile app

With the Dexcom ONE app, you can view your real-time glucose data, alerts and trends over time on your compatible smart phone or receiver.§

The latest addition to the Dexcom CGM family

Dexcom ONE+ offers the same features as Dexcom ONE, but in an all-in-one sensor and transmitter. It’s wearable, 60% smaller and has a unique 30-minute warm-up – taking smart, easy†,1 and effective##,2,-4 to 
a whole new level.

What's new with Dexcom ONE+?

  • No fingersticks,* scanning, or calibration required
  • Real-time glucose readings sent automatically to a compatible smart device
  • Flexible wear locations - back of upper arm, abdomen and upper buttocks#
  • Redesigned mobile app with simplified Dexcom Clarity integration†††
    • Smaller, all-in-one, descreet wearable sensor***
    • 30-minute sensor warmup
    • 12-hour grace period
    • Event entry
    • Share/Follow enables users to share glucose data with up to 10 followers‡‡
    * Finger prick required for diabetes treatment decisions if symptoms or expectations do not match readings.
    † Results obtained with Dexcom G6 study, which uses the same sensor (and algorithm) as Dexcom ONE.
    # For a list of compatible smart devices, visit
    § Optional Receiver sold separately.
    II Study included non-Dexcom CGM.
    # Dexcom ONE and Dexcom ONE+ are approved for wear on the arm and abdomen, and ages 2-17 for Dexcom ONE and 2-6 for Dexcom ONE+ can also wear their sensor on the upper buttocks
    ¶ D1 Post-Launch Research in BELL countries, May 2022.
    ** Time in range was defined as 3.9-10 mmol/L - 70-180 mg/dL.
    †† Data on File. Detailed Post Research Findings.
    §§ Dexcom ONE sensor and transmitter are water-resistant and may be submerged under 2.4 meters of water for up to 24 hours without failure, when properly installed.
    ## Results obtained with a prior generation Dexcom CGM system; similar results expected with Dexcom ONE given similar performance and feature sets and better usability.
    *** Compared to previous generation Dexcom CGM.
    ††† An internet connection is required while uploading to Dexcom Clarity.
    1 Shah V, et al. Diabetes Technol Ther. 2018;20(6):428-433. Study results obtained using the Dexcom G6, which uses the same applicator, sensor and algorithm as the Dexcom ONE.
    2 Lind M, et al. JAMA. 2017:317(4):379-387.
    3 Beck RW, et al. JAMA. 2017;317(4): 371-378.
    4 Beck RW et al. Ann Intern Med. 2017;167(6):365-374.
    5 Soupal J, et al. Diabetes Care. 2020:43:37 - 43.
    6 Wilmot, E. "Dexcom G7: Unique Features and Correlational Improvements in Glycemic Control." Presented at the 16th International Conference on Advanced Technologies & Treatments for Diabetes (ATTD) on February 23, 2023.
    7 Wadwa RP et al. Diabetes Technol Ther 20(6): 395-402.

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