Why doesn’t the FreeStyle Libre system need calibrating?

Unlike other sensor-based glucose monitoring systems that are currently available, the FreeStyle Libre Sensor is factory calibrated and requires no fingerstick calibrations during the 14-day wear period. FreeStyle Libre system is a factory calibrated Sensor that has been proven to safely and successfully replace SMBG and deliver important clinical benefit. Specific details about our calibration process are proprietary.1


1. Alva S, Bailey T, Brazg R, et al. Accuracy of a 14-day factory-calibrated continuous glucose monitoring system with advanced algorithm in pediatric and adult population with diabetes. Journal of Diabetes Science and Technology 2022;16(1):70-77.

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