Table 1 —

Definition of diagnostic categories for diabetes

Previously diagnosedCasual capillary blood glucose (mmol/l)FPG (mmol/l)2-h Blood glucose (mmol/l)Diagnostic category
No>5.5≥7.0New diabetes
No>5.56.1–6.9≥11.1New diabetes
No>5.56.1–6.97.8–11.0IGT
No>5.56.1–6.9 <7.8Impaired fasting glucose
No≥11.1Probable diabetes
YesKnown diabetes
No>5.5≤6.0Normal glucose tolerance
No≤5.5Normal glucose tolerance