Table 1.

Definitions of prediabetes [6,7].

Definition	Criteria	Prediabetes Range
ADA	IFG	100–125 mg/dL (5.6–6.9 mmol/L)
	IGT	140–199 mg/dL (7.8–11.0 mmol/L)
	HbA1c	5.7–6.4% (39–47 mmol/mol)
WHO	IFG	110–125 mg/dL (6.1–6.9 mmol/L)
	IGT	140–199 mg/dL (7.8–11.0 mmol/L)
IEC	HbA1c	6–6.4% (42–47 mmol/mol)

IFG—impaired fasting glucose, IGT—impaired glucose tolerance, expressed as 2 h post load glucose level, ADA—American Diabetes Association, IEC—International Expert Committee, WHO—World Health Organization.