Technology & Innovation – Dexcom


What is Real Time Continuous Glucose Monitoring (rt-CGM)?

Real Time Continuous Glucose Monitoring (rt-CGM) is a way to track glucose levels throughout the day and night in real time. A small rt-CGM sensor takes glucose measurements at regular intervals, up to 24 hours a day. A transmitter then sends the data to a display device via Bluetooth to show a current glucose value. The system also displays arrows that show the direction and speed glucose is changing. 

Continuous data can help you proactively manage glucose highs and lows. Real time alerts can give added insight into what different factors affect your glucose levels in the moment. Learn how meals, exercise and insulin cause your glucose levels to change through the day.

Why Use Dexcom rt-CGM?

Helping keep you in Control 

Proven to lower A1C, reduce hypoglycaemia and increase time in range1,2  Dexcom rt-CGM can help you take control of your diabetes management.

You can know Before You’re Low

Alerts can let you know when you’re headed too high or too low. Now with the predictive, Urgent Low Soon alert, you can be notified up to 20 minutes in advance of glucoses 3.1 mmol/l or below.

Who can benefit from a rt-CGM system?

Best for people with type 1 or type 2 diabetes using insulin looking for an easy to use rt-CGM
Best for people with type 1 diabetes using a connected insulin pump§

rt-CGM may be particularly helpful if you:

♦  Are not at your HbA1c goal
♦  Have hypoglycaemia unawareness
Have hyperglycaemia due to fear of hypoglycaemia

Experience the Dexcom rt-CGM Difference

The Dexcom rt-CGM system gives you a full picture of your glucose numbers and trends to help you better manage your diabetes, so you can live a healthier, more confident life.

Newly published guidelines from NICE3,4 (National Institute of Health and Care Excellence) now recommend that people with type 1 diabetes are offered a choice of glucose sensor, including real-time continuous glucose monitoring (rt-CGM)

 Learn More

Find the right Dexcom rt-CGM for you


Dexcom ONE

Best for people with type 1 or type 2 diabetes using insulin who are looking for an easy and accessible rt-CGM system.


Find out more


Dexcom G6

Best for people with type 1 diabetes using a connected insulin pump.


Find out more


Dexcom G7

Best for people with type 1 diabetes who may need extra support, such as people who are hypo unaware or children.


Find out more

Dexcom rt-CGM integrates with top insulin pumps, insulin pens and digital health systems to enable patient choice, improve management decisions and drive outcomes.

Closed Loop Insulin Pumps

Automatically delivers insulin, injected, for individual needs, powered by Dexcom rt-CGM.

Connected Insulin Pens

Keeps an accurate and timely record of insulin injected, powered by Dexcom rt-CGM.

Digital Health Apps

Keeps an accurate and timely record of insulin, powered by Dexcom rt-CGM.

Don’t just take our word for it

Listen to what our Warrior Community like-minded individuals who are all on the same journey as you and find out how to join the growing community.

Here more customer stories here 

Find out whether you can get rt-CGM on NHS here



Visit our website for more information and resources.

* Finger pricks required for diabetes treatment decisions if symptoms or expectations do not match readings.
 Display devices sold separately. For a list of compatible smart devices, please visit
 Internet connectivity required for data sharing. Following requires the use of the Follow App. Followers should always confirm readings on the Dexcom G6 App, Dexcom G7 App or Receiver before making treatment decisions.
§  Compatible insulin-delivery device sold separately.

1 Beck RW, et al. JAMA. 2017;317(4):371-378.
2 Welsh JB, et al. Diabetes Technol Ther. 2019;21;22(3)128-132.
3 Type 1 diabetes in adults: diagnosis and management. NICE guideline [NG17].
4 Diabetes (type 1 and type 2) in children and young people: diagnosis and management. NICE guideline [NG18].

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