What Are Acceptable Blood Glucose Levels?

Acceptable blood glucose levels are 100 milligrams of glucose per deciliter after a fasting blood glucose test; less than 140 mg/dL for people 50 years old or younger; less than 150 mg/dL for people 50 to 60; and less than 160 mg/dL for people over 60, states WebMD. Random glucose levels depend on when the patient had his last meal.

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