CGM Basics

What is Continuous Glucose Monitoring (CGM)?

Last Updated · September 28, 2021

Dexcom Continuous Glucose Monitoring (CGM) tracks glucose levels throughout the day and night and can alert you if your levels go too high or low.

CGM systems take glucose measurements at regular intervals, 24/7, and translate them into dynamic data to show glucose direction and rate of change.

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