u/Geebod2

My numbers were extremely every night around REM sleep. 300 - 380. When I checked with blood they were a 120 to 160 points lower. This was the same into the morning after taking insulin during the night. Still a 120 points difference between the two. (Correction based on blood). This may explain while I was going low in the AM . To much Insulin with the CGM reading. On the low end off by 30 to 40 points. Blood 48, CGM 82.

This could be damn inconvenient if not dangerous dosing for corrections. Forget the GMI INDEX. In the past I found it to be pretty close to my A1C.