I have my dexcom range set at 3.9/70 low and 7.8/140 high but that's fluid. I've fiddled with it based on how much (or little) I wish to be annoyed, I mean alerted, with an alarm. Not sure how the Libre works, but I can change those settings at any time and see in the software how much I was in/out of range, so they really are only for my info/benefit.

Glad your armband has worked out so well! Woot!

:) Me too! The Libre doesnt alarm and it doesnt care what level you are at, it just reports it when you scan, and you just need to scan at least once in every 8 hours to get a continuous graph. I’m kinda glad, really because it would have been setting off something shocking. My last reading was 2 just a short time ago. That is insane. So I checked with a finger prick and its actually 4.5 which is fine. I’m having a couple of spoons of sugar in a cup of tea (and ewww I do not like it!), just to be sure.

I’m really struggling with it at the moment, staying above 3.9, because if I have insulin, it drops like a rock. I have NO idea whats going on, really. Maybe my pancreas is repairing itself (I know... unlikely)

[edit] As an aside, I’m a scanning monster. Its a rare thing that I dont scan at least 8 times a day.

Problem solved. MY BG was NOT going as low as the sensor said... clearly that sensor was just inaccurate for most of its life. Checked a few times when I was awake and “low” and found that a test with a strip on the same reader gave a different read. 3.2 was 4.1, and so forth. New sensor today, firs read was 7. On the strip, 8.6. I feel normal again.