It's always difficult when your BG is running at the low end of normal - it doesn't give the Libre or BG monitor any room for error. I think that's sometimes the problem with it for me - at mid control, the odd mmol either way is acceptable, but with tight control it isn't as it's a much bigger percentage error and could be disastrous.
My sensor has been a good 2mmol out at times this time - except having managed to get hold of a few test strips for the built- in meter, I've realised that on many occasions, my Libre sensor has run at 1mmol low and my Mobile has run at 1mmol high making the difference seem a bit dire - the built-in meter often shows the middle ground. Other times, all three have been within a few points of each other. I'll never really know which is the more accurate.
Smidge
My sensor has been a good 2mmol out at times this time - except having managed to get hold of a few test strips for the built- in meter, I've realised that on many occasions, my Libre sensor has run at 1mmol low and my Mobile has run at 1mmol high making the difference seem a bit dire - the built-in meter often shows the middle ground. Other times, all three have been within a few points of each other. I'll never really know which is the more accurate.
Smidge