ADA Criteria for the diagnosis of diabetes Table 3—Criteria for the diagnosis of diabetes 1. A1C ≥ 6.5%. The test should be performed in a laboratory using a method that is NGSP certified and standardized to the DCCT assay.* OR 2. FPG ≥ 126 mg/dl (7.0 mmol/l). Fasting is defined as no caloric intake for at least 8 h.* OR 3. 2-h plasma glucose ≥200 mg/dl (11.1 mmol/l) during an OGTT. The test should be performed as described by the World Health Organization, using a glucose load containing the equivalent of 75 g anhydrous glucose dissolved in water.* OR 4. In a patient with classic symptoms of hyperglycemia or hyperglycemic crisis, a random plasma glucose ≥ 200 mg/dl (11.1 mmol/l). *In the absence of unequivocal hyperglycemia, criteria 1–3 should be confirmed by repeat testing. American Diabetes Association Diagnosis and Classification of Diabetes Mellitus, DIABETES CARE, VOLUME 33, SUPPLEMENT 1, JANUARY 2010

WHO 1999 Criteria for the diagnosis of diabetes IFG (Impaired Fasting Glucose) Fasting glucose 6.1 to 6.9mmol/l (110mg/dl to 125mg/dl) 2-h P glucose <7.8mmol/l (140mg/dl) IGT (Impaired Glucose Tolerance) (Fulfill both criteria) Fasting glucose <7.0mmol/l (126mg/dl) 2-h P glucose ≥7.8(140mg/dl) and <11.1mmol/l(200mg/dl) DM (Diabetes Milletus) (Fulfill any criteria) Fasting glucose ≥7.0mmol/l(126mg/dl) 2-h P glucose ≥11.1mmol/l (200mg/dl) * 2-h P glucose – Venous plasma glucose 2-h after ingestion of 75g oral glucose load