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ROC curve for diagnosing silent stage of DN via urinary CypA. The concentration of urinary CypA to diagnose silent stage of DN was 0.7250 ng/mL with a sensitivity of 0.900 and a specificity of 0.727. The area under the ROC curve was 0.850. CypA = cyclophilin A, DN = diabetic nephropathy, ROC = receiver operating characteristic.
