Serum creatinine and serum cystatin C level before and after PCI at 12 hours, 24 hours, 48 hours were 1.08±0.28, 1.21±0.33, 1.33±0.41, 1.43±0.41 mg / dL and 1.31±0.5, 1.78±0.7, 1.8±0.95, 1.6±0.52 mg / L, respectively.