The FreeStyle Libre system is clinically proven to be accurate, stable and consistent for up to 14 days without the need for fingerprick calibration.

• The FreeStyle Libre Sensor is factory calibrated and manufactured with minimal Sensor-to-Sensor variation eliminating the need for fingerprick calibration. 
• To achieve stable performance, the FreeStyle Libre Sensor uses Wired Enzyme technology that  o   Is not dependent on oxygen to produce glucose readings and   
• Allows the Sensor to operate at a very low electrical potential of 40mV vs a silver/silver chloride reference electrode.