Table 1—

Criteria for abnormal glucose tolerance tests

Fajans and Conn (1954) (ref. 1)USPHS (1964) (ref. 11)NDDG (1979) (ref. 3)WHO (1980/1985) (ref. 27)ADA (1997) (ref. 4)
Glucose dose1.75 g/kg IBW*100 g75 g75 g75 g
Fasting125140140126
30 min200
60 min185195200
90 min160200
120 min140140200200200
180 min125
Criteria for positive testAll threeAt least threeFasting or 120 min and intermediateFasting or 120 minFasting or 120 min
  • ADA, American Diabetes Association; NDDG, National Diabetes Data Group; USPHS, U.S. Public Health Service; WHO, World Health Organization.

  • *

    * IBW = ideal body weight from Metropolitan Life Insurance Tables.