Table 1.

Diagnostic criteria of diabetes mellitus.

	NGT	IFG	IGT	DM
Fasting pi-glucose	< 110 mg/dl	110-125 mg/dl		≥ 126 mg/dl
2h pl-glucose (venous)	< 140 mg/dl		140-199 mg/dl	≥ 200 mg/dl
2h pl-glucose (capillary)	< 160 mg/dl		160-219 mg/dl	≥ 220 mg/dl
Fasting whole blood glucose	< 100 mg/dl	100-109 mg/dl		≥ 110 mg/dl
2h whole blood glucose (venous)	< 120 mg/dl		120-179 mg/dl	≥ 180 mg/dl
2h whole blood glucose (capillary)	< 140 mg/dl		140-199 mg/dl	≥ 200 mg/dl

NGT = normal glucose tolerance, IFG=impaired fasting glucose, IGT = impaired glucose tolerance, 2h = 2 hours (postprandial glucose), Pl = plasma.