Blood glucose levels indicate the glucose amount that a person has in their blood. Having low or high blood sugar levels may be an indication of underlying health conditions that might necessitate medical attention.
Blood sugar levels are often low, high, or normal, which will depend on the amount of glucose the person has in their blood at any given time. Glucose is one of the simple sugars and is always present in your bloodstream. Normal blood glucose levels are typically measured when a person eats, fasts, or directly after they have eaten.
A normal level in adults that do not suffer from diabetes, and have not eaten for the last 8 hours (fasting), is under 100mg/dL. Normal blood glucose levels in adults that do not suffer from diabetes, 2 hours after they have eaten should be 90 to 110mg/dL.