Table 1.

Current Categories for Normal and Impaired Glucose Metabolism^a

Category	Fasting glucoseb (mg/dl)	2-hour glucosec (mg/dl)
Normal	<100	<140
Impaired glucose tolerance	—	≥140 and <200
Impaired fasting glucose	≥100 and <126	—
Diabetes	≥126	≥200

^aFrom American Diabetes Association.¹

^bAfter an overnight fasting of at least 8 hours.

^cAfter ingesting a standard solution with 75 grams of glucose.