Insulin or glucose?: Normal is 65-105 when drawn out of a vein while fasting. Various authorities have different "normal" levels. There are, however, no exact cut-offs, it's all a continuium. Finger sticks are not accurate enough. Two hour post meal should be less than 130-140, and any glucose >200 at any time suggests diabetes. An a1c >6% is also suggestive and needs further evaluation. See diabetes.Org for info.
Answered 3/13/2023
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