Table 1—

Diagnostic thresholds for diabetes and lesser degrees of impaired glucose regulation

CategoryTest
FPG2-h PG
Normal<100 mg/dl (<5.6 mmol/l)<140 mg/dl (<7.8 mmol/l)
IFG100–125 mg/dl (5.6–6.9 mmol/l)
IGT140–199 mg/dl (7.8–11.0 mmol/l)
Diabetes*≥126 mg/dl (≥7.0 mmol/l)≥200 mg/dl (≥11.1 mmol/l)
  • When both tests are performed, IFG or IGT should be diagnosed only if diabetes is not diagnosed by the other test.

  • * A diagnosis of diabetes needs to be confirmed on a separate day.