I have had a Libre sensor on for a week and am seriously considering ripping it off. I haven't had one as wildly high as this, and it is upsetting me. I keep cross checking it with my meter - anywhere between 0.5mmol/l and 2.5mmol/l higher, mostly around 1.5 to 2mmol/l. Problem is it is so erratic I can't even guesstimate or calculate some sort of average amount higher. I'm doing so much cross checking I may as well stick to my meter and abandon the sensor. Am considering informing Abbott, hoping for a replacement.