Glucose Fasting normal range — check your value

Between 70 and 99 mg/dL. From 100 to 125 is the prediabetes range and 126 or above is the diabetes range.

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Your Glucose Fasting test value

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Glucose Fasting

mg/dL

What Glucose Fasting measures

Blood sugar after 8 to 12 hours without food, showing how well the body controls glucose at rest.

Glucose Fasting normal range chart

ResultGlucose Fasting (mg/dL)

Below rangeBelow 70

In range70 – 100

Borderline100 – 126

Out of range126 and above

These bands are for female, 31–45 years. Enter your age and gender above to see the bands for you. The table below shows the range for every age and gender.

Glucose Fasting normal range by age and gender

AgeMaleFemale

0–1 years60 – 100 mg/dL60 – 100 mg/dL

2–6 years70 – 100 mg/dL70 – 100 mg/dL

7–11 years70 – 100 mg/dL70 – 100 mg/dL

12–17 years70 – 100 mg/dL70 – 100 mg/dL

18–30 years70 – 100 mg/dL70 – 100 mg/dL

31–45 years70 – 100 mg/dL70 – 100 mg/dL

46–60 years70 – 100 mg/dL70 – 100 mg/dL

60 years and above70 – 100 mg/dL70 – 100 mg/dL

What a high Glucose Fasting means, and common causes

Blood sugar after an overnight fast is higher than it should be. At 100-125 mg/dL this is the prediabetes range; 126 mg/dL or above on two occasions meets the cut-off for diabetes.

Common causes: Type 2 diabetes and prediabetes, stress or acute illness on the day of the test, steroid medicines, not fasting fully before the sample, pregnancy, and less commonly pancreatic or hormonal disease.

What a low Glucose Fasting means, and common causes

Blood sugar below about 70 mg/dL. In someone not on diabetes medication this is uncommon and usually not dangerous, but it matters if it comes with symptoms.

Common causes: Diabetes medicines or insulin taken before the test, a very long fast, alcohol, liver disease, adrenal or thyroid underactivity, and rarely an insulin-producing tumour.

Frequently asked questions

Between 70 and 99 mg/dL. From 100 to 125 is the prediabetes range and 126 or above is the diabetes range.

Eight to twelve hours, with plain water allowed. Tea with sugar, milk or a biscuit will push the result up and waste the test.

No, that falls in the prediabetes range. It is the stage where diet and activity changes work best, and your doctor will usually add an HbA1c to see the fuller picture.

70 se 99 mg/dL ke beech normal maana jaata hai. 126 ya usse upar do baar aaye to doctor diabetes ki jaanch aage badhate hain.

Please note. This page explains what a number means against reference ranges for your age and gender. It does not diagnose anything, cannot see the rest of your report, and is no substitute for a doctor. If your lab’s printed range differs, your lab’s range applies.