CRP and Increased total leukocyte count: Laboratory analysis showed leukocytosis (WBC 19.8 × 109/L, 90th percentile), elevated C-reactive protein (CRP) (11.8 mg/L; normal: <5), normocytic anemia (HGB: 93 g/L; normal: 110–140 g/L, and critical hyponatremia (Na+: 117 mmol/L; normal: 135–145 mmol/L).