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

PrediabetesDiabetes
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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