FreeStyle Libre 3 Plus Sensor for Dogs and Cats – Continuous Glucose Monitoring Device

To view the older Libre 2 Plus sensor - click here.

The FreeStyle Libre 3 Plus Sensor is a continuous glucose monitoring (CGM) device designed to provide real-time glucose readings without the need for repeated blood sampling.

It is used in veterinary practice to support monitoring of glucose levels in diabetic patients, allowing trends and patterns to be assessed over time and helping guide treatment decisions.

The sensor is applied to the skin and measures glucose levels in interstitial fluid, transmitting readings automatically to a compatible smartphone. This provides continuous, real-time glucose data throughout the day and night without the need to scan the sensor.

The FreeStyle Libre 3 Plus Sensor is small and discreet, which can be particularly beneficial for smaller patients or those prone to dislodging devices.

Each sensor is designed to be worn for up to 15 days, offering a convenient and minimally invasive method of glucose monitoring.

Key Features

Continuous glucose monitoring without repeated blood sampling

Real-time glucose readings sent automatically to a compatible smartphone

No scanning required to view glucose data

Small, discreet sensor design

Up to 15 days wear per sensor

Measures glucose in interstitial fluid

Compact design to support comfort and adherence

Optional alerts for high and low glucose levels, depending on app settings and device compatibility

Common Veterinary Use

Monitoring diabetic patients

Assessing glucose trends over time

Supporting insulin dose adjustments

Reducing the need for in-clinic glucose curves

Helping identify patterns such as nocturnal hypoglycaemia or post-insulin glucose changes

Important Information

This device is used in veterinary patients as part of clinical management.

Use should be directed by a veterinary surgeon.

Accuracy may vary depending on placement, adhesion, sensor tolerance, and individual patient factors.

Glucose readings from interstitial fluid may not always exactly match blood glucose readings, particularly during rapid glucose changes.

Compatible smartphone, app access, and account setup may be required. Compatibility should be checked before purchase.

For more information on managing diabetes, see our articles covering both dogs and cats.

See also Alphatrak Glucose Monitoring Starter Kit.