Diagnostic Accuracy of Serum Cystatin C for Early Recognition of Nephropathy in Type 2 Diabetes Mellitus

Table 4

ROC curve analysis of serum creatinine and cystatin C for diagnostic accuracy.

Parameters	Cutoff point	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
Serum creatinine	0.765 mg/dL	66.67	23.08	44.44	42.86
Serum cystatin C	0.93 mg/L	70.83	61.54	62.96	69.57
eGFRCG (creatinine)	90 ml/min/1.73 m^2	75	46.15	56.25	66.67
eGFRMDRD (creatinine)	90 ml/min/1.73 m^2	58.33	46.15	50	54.54
eGFRCKD-EPI (creatinine)	90 ml/min/1.73 m^2	16.67	73.08	36.36	48.72
eGFRCKD-EPI (cystatin C)	90 ml/min/1.73 m^2	75.0	46.15	56.25	66.67