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Where do I insert my Dexcom ONE sensor?

Last Updated · May 30, 2023

All Dexcom ONE users can insert their sensors on their abdomen or the back of their upper arms. People ages 2 to 17 years old can also choose their upper buttocks. Look for a place on your belly, back of upper arms, or upper buttocks where you have some padding.


Adult showing sensor placement in abdomen or upper arm

The sensor is not tested or approved for other sites. Talk to your healthcare professional about the best site for you.

5-step learning journey

Discover education resources, organised in a 5-step journey, to learn key information about your Dexcom ONE CGM system, from getting started, your first 10 days, to using Dexcom ONE in the long run.

Step 1: The basics of CGM
Step 2: Getting started
Step 3: Your first 10 days
Step 4: Using Dexcom ONE in the long run
Step 5: Understand your Diabetes trends