The ROC curves illustrated that the predictive ability of LAR (Area under the curve [AUC] = 0.693, 95% confidence interval [CI]: 0.662−0.723) for CA‐AKI was significantly better than that of LDH (AUC = 0.664, 95% CI: 0.632−0.696; ΔAUC: 0.029, DeLong test p = .040) or albumin (AUC = 0.659, 95% CI: 0.628−0.691; ΔAUC = 0.034, DeLong test p = .031) (Figure 1A). This evidence concerns the gene ALB and acute kidney injury.