What are normal fasting blood sugar levels?


Quick Answer

A normal fasting blood sugar level following eight hours without food is typically between 70 and 99 milligrams per deciliter, per Virginia Mason. Diabetes can be diagnosed when two or more consecutive fasting blood sugar tests result in levels over 126 milligrams per deciliter.

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Full Answer

Symptoms of fatigue, unplanned weight loss, excessive urination or thirst can be indicators of diabetes; however, some diabetics are diagnosed without having experienced any symptoms, notes Virginia Mason. Pre-diabetes can be diagnosed if the fasting blood sugar is between the levels of 100 and 125 milligrams per deciliter or if the A1C level is between 5.7 and 6.4 percent. Once a person receives a diagnosis of pre-diabetes, it is advisable to work with a doctor to embark on a diet and exercise regime to delay or prevent diabetes.

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