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Unlike other sensor-based glucose monitoring systems that are currently available, the FreeStyle Libre Sensor is factory calibrated and requires no finger prick calibrations during the 14-day wear period.²⁰⁶ FreeStyle Libre system is a factory calibrated Sensor that has been proven to safely and successfully replace SMBG and deliver important clinical benefit.^*4.28.201 Specific details about our calibration process are proprietary.