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A 28-year-old female asked:

Please tell me about glucose level in blood.how much should be the blood glucose level be in an adult? i feel very weak at regular intervals in a day

1 doctor answer2 doctors weighed in
Dr. Quang Nguyen
Specializes in Endocrinology
Blood sugar: Blood sugar (a test for diabetes) can be measured at various times. A fasting blood sugar should be less than 100 mg/dl, and a blood sugar taken randomly should not exceed 200 mg/dl. Blood sugar 2 hours after a meal should be less than 140. If you think you have high blood sugar, you should see your doctor for a blood draw.
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Last updated Feb 1, 2017
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