Normal fasting glucose range for a non-diabetic is:

• A. 70-99 mg/dL
• B. 100-126 mg/dL
• C. >126 mg/dL
• D. 40-60 mg/dL

Answer: (A)

Understanding what a normal fasting blood glucose looks like in someone without diabetes is key. Fasting glucose is measured after at least eight hours without eating, so it reflects baseline hepatic glucose production and insulin action. In healthy individuals, this level typically falls between 70 and 99 mg/dL. Values at or above 100 mg/dL begin to move into the prediabetes range, with 100–125 mg/dL called impaired fasting glucose, indicating higher risk for developing diabetes if lifestyle factors aren’t addressed. A level of 126 mg/dL or higher on more than one occasion meets the diagnostic threshold for diabetes. Very low numbers, such as 40–60 mg/dL, would indicate hypoglycemia, which is not normal in the fasting state. So the normal fasting glucose range for a non-diabetic is 70–99 mg/dL.