Fasting blood glucose
Your glucose after at least eight hours without eating: a common baseline measure.
Fasting glucose is measured first thing, before food, after roughly eight hours without calories. It reflects the glucose your liver releases overnight and is a standard screening number.
Common reference points: under 100 mg/dL (5.6 mmol/L) is typical, 100–125 suggests prediabetes, and 126 or above on repeat testing is in the diabetes range.