What fasting blood sugar value defines normal status in non-pregnant adults?

• A. 100-125 mg/dL
• B. >125 mg/dL
• C. 140-199 mg/dL
• D. <100 mg/dL

Answer: (D)

Fasting glucose reflects how well your body handles sugar after not eating for several hours. Normal fasting status for non-pregnant adults is a level below 100 mg/dL. Values from 100 to 125 mg/dL indicate impaired fasting glucose, a prediabetes range signaling higher risk but not yet diabetes. A fasting level of 126 mg/dL or higher on separate tests meets the diagnosis of diabetes. The range 140–199 mg/dL is tied to the 2-hour glucose value after an oral glucose tolerance test, not a fasting measurement, so it doesn’t define normal fasting status.