Currently available continuous glucose monitoring systems
| Type of system | Description | Examples |
|---|---|---|
| Real-time | Patient-owned Measures and displays data continuously (real-time) Stores data for retrospective analysis | Freestyle Libre 3 Dexcom G6 and G7, Stelo (over the counter) Guardian 3 and 4 and Simplera Eversense E3 |
| Intermittently scanned | Patient-owned Measures glucose continuously but only displays data when swiped by a reader or smartphone Also known as “flash” glucose monitoring | Freestyle Libre 2, Rio (over the counter) |
| Professional | Clinic-owned system placed on patient in office Typically worn for 7–14 days Glucose data may be blinded (both systems) or unblinded (Dexcom G6 Pro) to the patient Provides data to support medication and lifestyle changes, guide shared decision-making, and identify hypoglycemia | Freestyle Libre Pro Dexcom G6 Pro |