Table 2

Criteria for the diagnosis of prediabetes and diabetes

Prediabetes
 A1C 5.7% to <6.5% (39 to <48 mmol/mol). The test should be performed in a laboratory using a method that is NGSP certified and standardized to the DCCT assay.
 IFG: fasting glucose ≥100 but <126 mg/dL (≥5.6 but <7.0 mmol/L).
 IGT: 2-h plasma glucose ≥140 but <200 mg/dL (≥7.8 but <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 1.75 mg/kg (max 75 g) anhydrous glucose dissolved in water.*
Diabetes
 A1C ≥6.5% (≥48 mmol/mol). The test should be performed in a laboratory using a method that is NGSP certified and standardized to the DCCT assay.*
OR
 FPG ≥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 OGTT. The test should be performed as described by the World Health Organization, using a glucose load containing the equivalent of 1.75 mg/kg (max 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).
  • FPG, fasting plasma glucose; IFG, impaired fasting glucose; IGT, impaired glucose tolerance; max, maximum.

  • * In the absence of unequivocal hyperglycemia, result should be confirmed by repeat testing.