Criteria for the Diagnosis of Diabetes
- A1C >6.5%. The test should be performed in a laboratory using a method that is National Glycohemoglobin Standardization Program (NGSP) certified and standardized to the Diabetes Control and Complications Trial (DCCT) assay.*;or
- FPG (Fasting plasma glucose) >126 mg/dl (7.0 mmol/l). Fasting is defined as no caloric intake for at least 8 h.*; or
- 2-h plasma glucose >200 mg/dl (11.1 mmol/l) during an oral glucose tolerance test (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
- 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.