CRP and acute kidney injury: The scoring system includes: Acute kidney injury (AKI), CRP > 50 mg/L, serum albumin < 2.5 g/dL, ascitic fluid protein < 1.0 g/dL, MELD ≥ 15, diabetes mellitus, multidrug-resistant organisms (MDRO), and non-use of β-blockers (each = 1 point).