My Libre 3's are by and large within the advertised 92% threshold. I have found upper arm usage to be most unsatisfactory. I'm a mobile, side sleeper and flop to and fro. If on my left side with a left arm sensor placement it's a disaster. Not only do the readings go ridiculously innacurate with pressure variations but pressure on the sensor buries it into my arm and it hurts and wakens me from a lovely and needed old person sleep. Same thing for right/right. I have continuously tested application on my chest against blood readings and found the sensor to be just as accurate as arm placement. Voila!!

Sometimes, just for sh__'s and giggles I go back to an occasional arm placement and give my chest a rest (pun, pun), but I don't like it and it's not as accurate as my chest. I know chest is accurate, I have randomly checked both arm and chest against blood. If Abbott were to say otherwise I would challenge them to prove that statement. For many, many years I ran a laboratory. Testing and variables are not new to me. Now, realize, my findings are relevant to ME.

These CGM's are tools to be used to assist us in managing our health and are nothing more than tools. Sooner or later some other tool will come along and we'll adapt to that. For we diabetics proper sugar management is vital to our very existence on this planet. We do NOT want low blood sugar alarms going off in the middle of the night!! We do not want low blood sugar alarms at ANY time. You use a tool as a tool should be used. If you're left handed you don't drive a screwdriver with your right hand.

Hmmm, abdomen you say.