Table 34-6.

Tests Available to Aid Diagnosis of HIV-Related Pneumonia

Type	Test
Physiologic	Transcutaneous pulse oximetry Arterial blood gas analysis Lung function
Radiologic	Chest radiography Computed tomography of thorax
Pathologic	Serology (antigen or antibody testing) Serum lactate dehydrogenase enzyme measurement Microscopy and culture of body fluid/tissue (e.g., sputum, blood, bronchoalveolar lavage fluid, lung tissue) obtained by: Sputum induction Bronchoscopy and bronchoalveolar lavage fluid Bronchoscopy and transbronchial biopsy Thorascopic biopsy Open-lung biopsy Nucleic acid detection of specific organisms (e.g., polymerase chain reaction for Pneumocystis jirovecii in bronchoalveolar lavage fluid or sputum)