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Diagnostic value of procalcitonin, CRP, leukocytes and BAL neutrophils for pulmonary complications in the immunocompromised host

^* Pulmonary Medicine, University Hospital Basel, Basel, Switzerland ^# Endocrinology, University Hospital Basel, Basel, Switzerland

CORRESPONDENCE: Daiana Stolz, Clinic of Pneumology, University Hospital Basel, Basel, Switzerland

We evaluated the diagnostic accuracy of laboratory biomarkers and BAL differential cell count for the diagnosis of bacterial infection in severe immunosuppressed patients. One-hundred and seven consecutive patients undergoing bronchoscopy for suspected pulmonary infection were included in this study. Assessment included history, clinical examination, chest image studies, CRP, procalcitonin (ProCT), leukocyte counts, and BAL results. Patients were classified as having proven, possible, and non-bacterial infection.