Diagnosis and Assessment
Table 1. Prediabetes Risk Factors Suggesting a Need for Screening (D-4)
Family history of DM CVD Being overweight or obese Sedentary lifestyle Nonwhite ancestry
Previously identified impaired glucose tolerance, impaired fasting glucose, and/or metabolic syndrome Hypertension Increased levels of triglycerides, low concentrations of HDL-C, or both History of GDM Delivery of a baby weighing more than 4 kg (9 lb) Polycystic ovarian syndrome Antipsychotic therapy for schizophrenia and/or severe bipolar disease
Table 2. Glucose Testing and Interpretation Test
FPG, mg/dL
Result ≤ 99
100-125 ≥ 126
Glucose, mg/dL (OGTT, 2 hours aſter ingestion of 75-g glucose load)
HbA1c, % (as a screening test)
≤ 139
140-199 ≥ 200
≤ 5.4
5.5-6.4 ≥ 6.5
Diagnosis Normal
Impaired fasting glucose
Diabetes, confirmed by repeating the test on a different day
Normal Impaired glucose tolerance
Diabetes, confirmed by repeating the test on a different day
Normal
High risk/prediabetes; requires screening by glucose criteria
Diabetes, confirmed by repeating the test on a different day
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