Patients with fasting glucose levels from 100 to 125 mg/dL (5.6 to 6.9 mmol/L) are considered to have impaired fasting glucose.
Po trenutno veljavni definiciji pomenita dve meritvi glukoze na tešče nad 126 mg/dL (7,0 mmol/L) diagnozo za sladkorno bolezen.