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. 2014 Aug 1;10(4):292–303. doi: 10.1089/chi.2013.0158

Table 3.

Summary of Criteria for Diagnosing Prediabetes and Diabetes38,50

  Prediabetes Diabetesd
Fasting plasma glucosea 100–125 mg/dL ≥126 mg/dL
2-hour plasma glucose (OGTT)b 140–199 mg/dL ≥200 mg/dL
Random plasma glucosec Not applicable ≥200 mg/dL
Hemoglobin A1c 5.7–6.4% ≥6.5%

Adapted from the American Diabetes Association Recommendations.50

a

Fasting for at least 8 hours with no calorie intake.

b

OGTT using a load 1.75 g/kg of body weight of glucose with a maximum of 75 g.

c

In patients with hyperglycemic crises or classic symptoms of hyperglycemia (e.g., polyuria, polydipsia).

d

In the absence of unequivocal hyperglycemia, diagnosis is confirmed if two different tests are above threshold or a single test is above threshold twice.

OGTT, oral glucose tolerance test; A1c, glycosylated hemoglobin.