What is a normal glucose level in a blood test? A healthy (normal) fasting blood glucose level for someone without diabetes is 70 to 99 mg/dL (3.9 to 5.5 mmol/L).

According to the World Health Organization (WHO), the normal fasting range for blood glucose is between 70 and 100 milligrams per deciliter (mg/dL), or 3.9 and 5.6 millimoles per liter (mmol/L).

A blood sugar level less than 140 mg/dL (7.8 mmol/L) is normal. A reading of more than 200 mg/dL (11.1 mmol/L) after two hours means you have diabetes.

A person with normal blood sugar levels has a normal glucose range of 72-99 mg/dL while fasting and up to 140 mg/dL about 2 hours after eating.

The normal range for fasting blood glucose (blood glucose when you haven't eaten) should be between 70 mg/dL and 100 mg/dL (milligrams per deciliter).