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Diabetes Education

Diagnosis

Diabetes is diagnosed with a fasting blood sugar test or with a non-fasting glycated hemoglobin test (A1c). A fasting blood sugar is performed after you have had nothing to eat or drink for at least eight hours. A random non-fasting test can be performed and diagnosed if the patient is experiencing hyperglycemic symptoms. (See Symptoms of Diabetes).

The following source is from the American Diabetes Association 2011.

Criteria for the diagnosis of diabetes


 

Normal

Pre-diabetes

Diabetes

*Fasting Glucose

Less than 100

100-125

126 or higher

Random, non-fasting glucose on a patient with symptoms of hyperglycemia

Less than 140

140-199

200 or higher

*A1c

Less than 5.6%

5.7 – 6.4%

6.5% or higher

*In the absence of unequivocal hyperglycemia, criteria should be confirmed by repeat testing

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