What is the normal fasting glucose range?

What is the normal fasting glucose range?

• A. 70-100 mg/dL
• B. 100-140 mg/dL
• C. 40-60 mg/dL
• D. 120-160 mg/dL

Answer: (A)

The main idea is understanding what a normal fasting glucose level looks like after an overnight fast. In healthy individuals, fasting glucose typically sits around 70–99 mg/dL, with many guidelines allowing up to 100 mg/dL as the upper limit of normal. Values at or above 100 mg/dL, especially if persistently elevated, begin to fall into impaired fasting glucose (prediabetes) territory, and diabetes is diagnosed with higher thresholds (notably fasting glucose ≥126 mg/dL on two occasions). The other ranges describe hypoglycemia (much lower values) or clearly elevated levels outside normal fasting ranges. So, the best answer is the 70–100 mg/dL range.

The main idea is understanding what a normal fasting glucose level looks like after an overnight fast. In healthy individuals, fasting glucose typically sits around 70–99 mg/dL, with many guidelines allowing up to 100 mg/dL as the upper limit of normal. Values at or above 100 mg/dL, especially if persistently elevated, begin to fall into impaired fasting glucose (prediabetes) territory, and diabetes is diagnosed with higher thresholds (notably fasting glucose ≥126 mg/dL on two occasions). The other ranges describe hypoglycemia (much lower values) or clearly elevated levels outside normal fasting ranges. So, the best answer is the 70–100 mg/dL range.