ALB and acute kidney injury: Although both albumin and the NL ratio were significantly changed in the AKI (non-AKI group vs AKI group, albumin: 3.9 ± 0.5 vs 3.6 ± 0.6, P = 0.002, NL ratio: 6.7 ± 5.1 vs 9.7 ± 5.4, P < 0.001) and early AKI group (non-AKI group vs early AKI group, albumin: 3.9 ± 0.5 vs 3.5 ± 0.6, P < 0.001, NL ratio: 6.7 ± 5.1 vs 11.1 ± 5.8, P < 0.001), they did not predict late AKI occurrence (non-AKI group vs late AKI group, albumin: 3.9 ± 0.5 vs 3.8 ± 0.5, P = 0.906, NL ratio: 6.7 ± 5.1 vs 7.1 ± 3.2, P = 0.991) (Table 5).