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

To view the older, larger FreeStyle 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 medicine 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 has a small design, which can be particularly beneficial for cats, smaller patients, or animals prone to dislodging sensors.

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

What’s Included

Each FreeStyle Libre 3 Plus Sensor pack contains:

1 x FreeStyle Libre 3 Plus Sensor

1 x Sensor Applicator

Product instructions and packaging

Please note: A separate reader device is not included. The FreeStyle Libre 3 Plus Sensor is designed to transmit glucose readings to a compatible smartphone using the appropriate FreeStyle Libre app. Smartphone and app compatibility should be checked before purchase.

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 sensor design

Up to 15 days 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 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, 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.

See also Alphatrak Glucose Monitoring Starter Kit.