 Recently, the American Diabetes Association has defined new diagnostic criteria*:
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Symptoms + casual BG > 200 mg/dl (11.1 mmol/L)
OR
FBG > 126 mg/dl (7.0 mmol/L)
OR
2-h BG in OGTT value > 200 mg/dL *
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*Testing must be repeated on a separate day; FBG is preferred test. (BG = blood glucose; FBG = fasting blood glucose; OGTT = oral glucose tolerance test)
Rationale for the new diagnostic criteria include:
- FBG and 2-h BG levels represent approximate thresholds for risk of microvascular and macrovascular disease.
- FBG and 2-h BG cut-points define equal risk
- FBG is simpler, easier, and cheaper test than OGTT
- From:
- Report of the Expert Committee on the Diagnosis and Classification for Diabetes Mellitus, Diabetes Care 21 (supplement 1) American Diabetes Association: Clinical Practice Recommendations 1998.
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