GSTM1 and acute kidney injury: Laboratory test results showed that the AKI group had lower hemoglobin (Hb) (109.9 ± 23.0 vs. 119.9 ± 21.5 g/L, p = 0.003) and albumin (Alb) (37.0 ± 3.8 vs. 39.5 ± 4.4 g/L, p < 0.001) baseline levels, with higher blood urea nitrogen (BUN) (6.7 ± 3.4 vs. 5.4 ± 2.1 mmol/L, p = 0.021) and SCr levels (95.7 ± 45.0 vs. 68.8 ± 20.7 mol/L, p < 0.001).