What Are the Optimal Fasting Blood Sugar Ranges?


Quick Answer

Fasting blood glucose levels should range from 70 mg/dL to 100 mg/dL, according to the American Diabetes Association. Fasting levels are those measured when an individual has not consumed any meals in the eight hours prior to the test.

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What Are the Optimal Fasting Blood Sugar Ranges?
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Full Answer

Postprandial glucose levels are those observed one to two hours after a meal is consumed and should be less than 180 mg/dL.

'Hypoglycemia' refers to lower than optimal levels, while 'hyperglycemia' is the presence of too much sugar in the bloodstream, treated with insulin in diabetics.

Doctors often use an A1C blood test -reflecting the average blood glucose levels over the previous three months- to diagnose type 1 and type 2 diabetes and gauge treatment plans.

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