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Pneumocystis jirovecii pneumonia (PCP) is a common opportunistic infection (OI) in AIDS patients. Laboratory diagnosis of this life-threatening infection is based primarily upon identifying P. jirovecii cysts in respiratory secretions, a technique that is variably sensitive and requires adequate patient effort (for induced sputum examination) or an invasive test (bronchoscopy); both are quite operator dependent.

Abstract & Commentary: Plasma β-glucan for the Diagnosis of Pneumocystis Pneumonia in AIDS Patients