Fasting glucose value indicating diabetes is:

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

Answer: (D)

Fasting glucose values help distinguish normal metabolism from diabetes. A fasting glucose of 126 mg/dL or higher is the threshold used to diagnose diabetes, reflecting persistent hyperglycemia when the body isn’t food-dependent. Normal fasting levels are about 70–99 mg/dL, while 100–125 mg/dL is considered impaired fasting glucose (a prediabetes range). So, the value above 126 mg/dL best indicates diabetes (often confirmed with a repeat test or additional criteria).