CRP and infection: On arrival he had fever and profuse diarrhea, leukocytosis, normal procalcitonin (PCT), elevated C-reactive protein (CRP), lactate 0.9 mmol/L, an Acute Physiology and Chronic Health Evaluation (APACHE) II score of 11, and a Sequential Organ Failure Assessment (SOFA) score of 3; his Predisposition, Infection, Response, and Organ Dysfunction (PIRO) score was 5 [15].