One small device. One simple app. One smart Continuous Glucose Monitoring System.

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Real time glucose numbers you can count on

Thanks to the exceptional accuracy¹ of Dexcom ONE CGM, you can make treatment decisions, like insulin dosing, without finger pricks^* or scanning. Dexcom ONE doesn't require any calibration to deliver accurate readings unlike other blood glucose monitoring systems.

* 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.

Alerts tell you when you're high or low

Your Dexcom ONE system can alert you whenever your glucose level falls outside of your preset High and Low glucose levels, so that you can take action. You can customise the alerts and even delay your first high alert.

Getting started is easy

The Dexcom ONE glucose sensor can be worn up to 10 days and has a slim profile, making it nearly invisible under clothing. Thanks to the sensor auto-applicator, it only takes the push of a button to insert the sensor's wire in an instant beneath the skin. In a study, 84% of Dexcom users reported painless sensor insertion².

New to using Dexcom ONE?

Get started on your journey to zero finger pricks* or scanning with our simple self-guided training programme.

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Meet Dexcom ONE

Dexcom ONE glucose monitor for type 1 or type 2 diabetes

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^‖

One device. Zero finger pricks.^*

* If your glucose monitoring system alerts and readings from the Dexcom ONE do not match symptoms or expectations, use a blood glucose meter to make diabetes treatment decisions.

§ Compatible smart device sold separately.

“This little sensor allows me to set boundaries.”

“It alerts me so I can adjust my insulin in advance. It shows how each food affects me, helps me to choose what to eat and when. I know how sports and stress affect me, I track my low glucose trends constantly!”

Gabriela G., Dexcom Warrior
T1D

The featured Warrior is a sponsored spokeperson of Dexcom.

Meet Our Dexcom Warriors

Gabriela G., Dexcom Warrior, living with Type 1 Diabetes

How do I insert my Dexcom ONE sensor?

We designed the Dexcom ONE CGM system sensor auto-applicator for easier, more consistent sensor insertions. We recommend viewing the following video for a helpful demonstration of the sensor insertion and transmitter attachment process.

Getting started with Dexcom ONE

Is it painful to insert a Dexcom ONE sensor?

The Dexcom auto applicator was designed for easier, more consistent sensor insertions. According to a survey of Dexcom users, 84% reported that the initial sensor insertion was painless, and 100% reported that the applicator was easy to use¹.

1 Shah V LL, Wadwa P, et al. Performance of a Factory-Calibrated Real-Time Continuous Glucose Monitoring System Utilizing an Automated Sensor Applicator. Diabetes Technology and Therapeutics. 2018;20(6).

Where can I wear Dexcom ONE?

All patients can use their abdomen or back of upper arms. Patients 2 to 17 years old can also choose their upper buttocks. Look for a place on your abdomen, back of upper arms, or upper buttocks where you have some padding. The sensor is not tested or approved for other sites. Talk to your Healthcare Professional about the best site for you. Ages 2-17 years: Insert in your abdomen, back of upper arms, or upper buttocks Ages 18 and older: Insert in your abdomen or back of upper arms.

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.

How accurate is my Dexcom ONE compared to my blood glucose meter?

Dexcom CGM systems provide much more information for users than traditional Self-Monitoring of Blood Glucose (SMBG) does. For Dexcom ONE users, the expected level of accuracy is based on comparisons to fingerstick results--which require careful consideration of timing and technique consistency when drawing blooding glucose values.

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. If you've never used a CGM system, you can benefit from the significant advantages that the Dexcom ONE offers compared to other glucose monitoring methods, like fingersticks with blood glucose meters.^*

Some benefits of using the Dexcom ONE are:

Knowing where your glucose was and where it is going
Getting immediate feedback on your lifestyle decisions
Making treatment decisions using your Dexcom ONE
Decreasing the pain and hassle from frequent blood glucose testing, sparing the fingertips^*

* If your glucose alerts and readings from Dexcom ONE do not match symptoms or expectations, use a blood glucose meter to make diabetes treatment decisions.

Is my smartphone compatible with the Dexcom ONE?

A variety of iOS and Android smartphones are compatible with the Dexcom ONE app. To view a list of compatible smartphones, visit dexcom.com/compatibility.

Dexcom ONE is the right CGM for you if:

You have type 1 or 2 diabetes
You are using multiple daily injections

Explore the Dexcom CGM Range

There is a Dexcom CGM for all people with diabetes. Explore our products to find the best diabetes CGM for you.

Find the Dexcom CGM for You

Take the Next Step

Joining the Dexcom family is easy. Simply click the link below to get started.

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* Finger pricks required for diabetes treatment decisions if symptoms or expectations do not match readings.

† For a list of compatible devices, visit www.dexcom.com/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.