Bruce Stephens
Well-Known Member
- Relationship to Diabetes
- Type 1
3.9-10.0 is the range recommended in the consensus statement https://care.diabetesjournals.org/content/40/12/1622 (for most patients, anyway; I think there are some subgroups with slightly different ranges).
It's the widest range that seems to be allowed by the software, and I suspect it covers the range of best accuracy.