Criteria for the diagnosis of diabetes

What are the screening recommendations and criteria for the diagnosis of diabetes? 

Universal screening is recommended at age 45 years. Younger individuals should be screened if they have risk factors for type 2 diabetes (i.e., obesity, family history of diabetes, hypertension, and hyperlipidemia). Prediabetes identifies individuals at high risk for developing diabetes.

American Diabetes Association Criteria for the Diagnosis of Diabetes

HgA1c5.7%-6.4%> 6.5%
Fasting blood glucose (8 hrs fast)100-125 mg/dL> 126 mg/dL
Random blood glucose> 200 mg/dL with symptoms of hyperglycemia (i.e., polyuria, polydipsia)
2-h oral glucose tolerance test (75 g)140-199 mg/dL> 200 mg/dL

HgA1c, Hemoglobin A1c.


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