Why do the numbers on Sensor pack and Sensor applicator need to match?

The Sensor pack and Sensor applicator need to match because the Sensor is factory calibrated.1  Information about the calibration of the sensing element (also known as the Sensor tip) is programmed in the Sensor at the factory and these two components must be used together.2

References

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.

2. FreeStyle Libre flash glucose monitoring system User's Manual.

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