The CGM market is highly concentrated, with Abbott and Dexcom holding the largest market share, followed by Medtronic and Senseonics.

• Abbott:

  • FreeStyle Libre systems: Known for their affordability and user friendliness. The FreeStyle Libre 3 plus, the latest model, is a real-time CGM that sends minute-by-minute glucose readings to a smartphone app, eliminating the need to scan the sensor. The sensor is also smaller than previous versions and can be worn for up to 15 days.  

  • Abbott Lingo, an over-the-counter (OTC) model, offers a 14 day wear time and is intended to be a wellness device without the real-time alerts.

• Dexcom:

  • Dexcom G7: A real-time CGM with an all-in-one sensor and transmitter, offering a smaller size and a faster warm-up time of 30 minutes. The sensor can be worn for 10 days with a 12 hour grace period. It is approved for people as young as 2 years old and is compatible with certain automated insulin delivery (AID) systems.

  • Dexcom Stelo: An over-the-counter biosensor for adults with Type 2 diabetes who are not on insulin. It provides a 15 day wear time and offers insights into how lifestyle factors affect glucose levels but does not include real-time alerts for high or low glucose.

• Medtronic:

  • Guardian Connect System: A CGM that provides real-time glucose readings and can also send predictive alerts, notifying users of potential highs or lows before they happen. Medtronic also has a range of integrated systems like the MiniMed 770G and 780G, which combine a CGM with an insulin pump for a closed loop system.

• Senseonics:

  • Eversense E3: This is the only CGM with an implantable sensor, which is professionally placed under the skin and can be worn for up to 180 days (6 months). The system includes a smart transmitter worn on the body that is removable and rechargeable.