FreeStyle Libre 2 Plus Sensor for Dogs and Cats – Continuous Glucose Monitoring Device

To view the newer Libre 3 sensor which offers a smaller, more discreet design – click here.

The FreeStyle Libre 2 Plus Sensor is a continuous glucose monitoring (CGM) device that provides real-time glucose readings without the need for repeated blood sampling.

It is widely used in veterinary practice to support the monitoring of glucose levels in diabetic patients, allowing trends to be assessed over time and helping guide clinical decision-making.

The sensor is applied to the skin and measures glucose levels in interstitial fluid, transmitting readings directly to a compatible smartphone or reader device. It provides continuous data throughout the day and night, helping to identify patterns, fluctuations, and responses to treatment.

Each sensor is designed to be worn for up to 15 days, offering a convenient and minimally invasive way to monitor glucose levels over an extended period.

Key Features

Continuous glucose monitoring without repeated blood sampling

Real-time glucose readings transmitted to smartphone or reader

Up to 15 days per sensor 

Optional alerts for high and low glucose levels

Measures interstitial glucose using a small subcutaneous filament

Compact, discreet, and easy to apply

Common Veterinary Use

Monitoring diabetic patients

Assessing glucose curves without hospitalisation

Evaluating response to insulin therapy

Identifying hypoglycaemic or hyperglycaemic trends

Important Information

This is a human medical device used in veterinary patients under the prescribing cascade

Use should be directed by a veterinary surgeon

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

Urine sample testing may still be required - speak to your veterinary surgeon for further advice. 

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

See also Alphatrak Glucose monitoring starter kit.