CRP and kidney failure: When Cl level cut-off values are taken as 98 mEq/L and classified as normal or high; chance of mortality (44% vs 61%), renal failure prevalence (27% vs 45%), urea (89.09 ± 56.57 vs 121.35 ± 65.27 mg/dL), Na (133.87 ± 7.32 vs 140.34 ± 7.94 mEq/L), C-reactive protein (CRP) 86.44 ± 67.27 and 126.26 ± 92.7 mg/L), and partial pressure of carbon dioxide (pCO2) (47.16 ± 13.47 vs 40.88 ± 12.41 mmHg) were found to be correlated (p < 0.05) (Table 1).