ALB and acute kidney injury: The lymphocyte counts and serum albumin levels were significantly lower in AKI (+) patients than in AKI (−) patients (1.9 ± 0.8 vs. 2.2 ± 0.6, p <  0.001; 3.4 ± 0.5 vs. 3.9 ± 0.4, < 0.001).