All glucose monitoring devices require calibration to maintain accuracy using one of two methods: patient calibration or factory calibration.¹ Unlike some of the other sensor-based glucose monitoring systems currently available, the FreeStyle Libre Sensor is factory calibrated and requires no fingerstick calibrations during the 14-day wear period.

Reference

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.