Table 2—

Criteria for the diagnosis of diabetes

1.Symptoms of diabetes and a casual plasma glucose 200 mg/dl (11.1 mmol/l). 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.
2.FPG 126 mg/dl (7.0 mmol/l). Fasting is defined as no caloric intake for at least 8 h.
3.2-h PG 200 mg/dl (11.1 mmol/l) during an OGTT. The test should be performed as described by the World Health Organization (4a), using a glucose load containing the equivalent of 75-g anhydrous glucose dissolved in water.
  • In the absence of unequivocal hyperglycemia, these criteria should be confirmed by repeat testing on a different day. The OGTT is not recommended for routine clinical use, but may be required in the evaluation of patients with IFG (see text) or when diabetes is still suspected despite a normal FPG.