Hi Deb,
I just replied on your other thread but am copying the reply here:
The normal range (for a non-diabetic cat) is approximately 40-120 mg/dl (2.2 -6.7 mmol) on a human meter. (If you are using a pet meter (ie Alpatrak) the numbers will read a tad higher than these.)
Some cats naturally run a little higher or lower than these numbers.
For a cat on insulin, numbers below 40mg/dl or 2.2 mmol, could be considered hypoglycemic (whether symptoms show or not); and some cats will show symptoms at a little above these numbers.
Cats that are newly diagnosed diabetics will quite often have blood glucose numbers in the 400's (20's) or higher.
Has your vet told you any of Boo's blood glucose numbers?
Eliz