LCN2 and acute kidney injury: The discrimination ability of urinary NGAL for predicting AKI in individuals with ACEF scores ≥ 1.1 (AUROC, 0.873; 95% CI, 0.784–0.961) outperformed that in individuals with ACEF scores < 1.1 (AUROC, 0.606; 95% CI, 0.492–0.720), with a significant difference in the AUROC (P < .001; Fig 1).