Table 4.

Criteria for the diagnosis of diabetes^a

1. HbA1c  ≥6.5% (48 mmol/mol)b

or

2. FPG ≥7.0 mmol/L (126 mg/dL)c

or

3. 2-h plasma glucose ≥11.1 mmol/L (200 mg/dL) during an OGTTd

or

4. In a patient with classic symptoms of hyperglycemia or hyperglycemic crisis, a random plasma glucose ≥11.1 mmol/L (200 mg/dL)e

Adapted from the ADA (2).

^aIn the absence of unequivocal hyperglycemia, diagnosis requires abnormal results on two different tests (glucose and HbA_1c) on the same day or two abnormal results from samples obtained on different days.

^bThe test should be performed in a laboratory using a method that is NGSP certified and standardized to the DCCT assay. Point-of-care assays should not be used for diagnosis.

^cFasting is defined as no caloric intake for at least 8 h.

^dThe OGTT should be performed as described by the WHO, using a glucose load containing the equivalent of 75 g anhydrous glucose dissolved in water.

^e“Random” is any time of the day without regard to time since previous meal. The classic symptoms of hyperglycemia include polyuria, polydipsia, and unexplained weight loss.