Table 2.

Expert Committee criteria for the diagnosis of diabetes

1.  Symptoms of diabetes plus casual plasma glucose concentration ≥200 mg/dl. Casual is defined as any time of day without regard to time since last meal. The classic symptoms of diabetes include polyuria, polydipsia, and unexplained weight loss.
or
2.  FPG ≥126 mg/dl. Fasting is defined as no caloric intake for at least 8 h.
or
3.  2-h plasma glucose ≥200 mg/dl during an OGTT. The test should be performed as described by the World Health Organization7 using a glucose load containing the equivalent of 75 g anhydrous glucose dissolved in water.
In the absence of unequivocal hyperglycemia with acute metabolic decompensation, these criteria should be confirmed by repeat testing on a different day. The third measure (OGTT) is not recommended for routine clinical use.