Need phone support? Request a callback. Visit our improved Help page for answers to frequent questions

Getting Started

How do I insert my Dexcom ONE sensor?

Last Updated · November 3, 2022

Dexcom 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.

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