FreeStyle Libre 3 Plus: Continuous Glucose Monitoring Sensor

A free online consultation is required before this treatment can be supplied.

The primary difference lies in how data is transmitted.

• Libre 3 Plus: Functions as a full Continuous Glucose Monitor (CGM). It automatically sends real-time glucose readings to your smartphone every minute via Bluetooth. It is also significantly smaller and thinner.
• Libre 2 Plus: Operates primarily as Flash Glucose Monitoring. While it features optional Bluetooth alarms, you must manually scan the sensor with your phone or reader to see a glucose reading and update your trend graph.

Compared to the standard Libre 3, the Plus model offers an extended wear-time of 15 days (vs 14 days) and enhanced Bluetooth stability. Crucially for NHS patients using insulin pumps, it is designed to integrate with Automated Insulin Delivery (AID) systems, supporting "closed-loop" therapy.

While packaging can vary by supplier, they are typically sold as individual units. For those self-funding a monthly supply, you would usually purchase two sensors to cover a 30-day period.

Yes. Following updated NICE guidelines, most people with Type 1 diabetes and many with Type 2 (who use insulin multiple times daily) are eligible for CGM technology.

Note: Availability may depend on your local Integrated Care Board (ICB) formulary. Speak to your GP or hospital diabetes team to discuss switching to this model.

No. The Libre 3 Plus is not available as a general retail item on supermarket or high-street shelves. However, you can purchase it without a prescription from registered UK online pharmacies or directly from Abbott, provided you complete a medical eligibility declaration (for VAT relief purposes).

A separate Reader is not required if you have a compatible smartphone. The FreeStyle Libre 3 app (available on iOS and Android) performs all the functions of a Reader, including displaying real-time data, trend arrows, and historical reports for your doctor.