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Criteria for Diagnosis
Symptoms of diabetes (polyuria, polydipsia, unexplained weight loss) plus plasma random glucose concentration $200 mg/dl or fasting plasma glucose (FPG) $ 126 mg/dl recorded at least twice or 2-hr post-prandial glucose $200 mg/dl during an oral glucose tolerance test.
An intermediate category of diabetes, or “pre-diabetic” state, refers to patients with “impaired glucose tolerance” (2-hr post-prandial glucose on oral glucose tolerance test between 140 and 200 mg/dl, and/or “impaired fasting glucose” (between 110 and 126 mg/dl).
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