The area under the receiver-operating characteristic curves (AUC) (95% confidence interval (CI), p) of the initial levels of PCT, CRP, IL-6 and SAA for predicting the occurrence of AKI were 0.986 (0.966–1.000, p<0.05), 0.838 (0.738–0.919, p<0.05), 0.758 (0.647–0.869, p<0.05), and 0.547 (0.414–0.680, p>0.05), respectively (Figure 2). Here, CRP is linked to acute kidney injury.