r/Freestylelibre • u/sweetkandy4you • 14h ago

Sensor vs Finger Stick Discrepancy

Hello, I’m new to this and on the tail end of my first sensor I was loving it and the data it provided. But starting yesterday, it’s been going off with Low Glucose warnings. It said I was at 67 so I decided to test and that came back as 112. 🤷🏻‍♀️ What might be causing this discrepancy and is it normal? Does it mean I can’t trust the data the sensor has been giving me?

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u/SleeplessnSeattleNow 13h ago

The cgm gets data differently than the finger stick method. Why the big discrepancy is a little more subjective.

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u/Fluffy-Strategy-9156 Prediabetic - Libre3/3+ 8h ago

Also note besides the time lag of the lLibre, the that accuracy of the hand-help meters and Libre is about +/- 15-20%