Table 1.

Diagnostic Criteria for Diabetes Mellitus

Classification	Fasting plasma glucose, mg/dL	2-h oral glucose tolerance test, m	Random plasma g/dL* glucose, mg/dL
Normal	<100	<140
Prediabetes
Impaired fasting glucose	≥100–125
Impaired glucose tolerance		≥140–199
Diabetes	≥126†	≥200†	>200‡

^*75-g glucose dose.

^†Abnormal test must be repeated on subsequent day.

^‡Must occur with hyperglycemic symptoms: polydipsia, polyphagia, polyuria, blurred vision.

Source: Executive summary: standards of medical care in diabetes—2008. Diabetes Care. 2008;31(suppl 1):S5-S54.