Bacterial pneumonia with sepsis: Elevated CRP and procalcitonin prompted empiric broad-spectrum antibiotics (piperacillin-tazobactam, later escalated to linezolid and meropenem). Antibiotic therapy was escalated due to clinical deterioration alongside markedly elevated procalcitonin (16.2 ng/mL), strongly suggesting bacterial co-infection. Blood, urine, and endotracheal cultures were performed but yielded no significant pathogens. This evidence concerns the gene CRP and Sepsis.