OverviewA sputum sample is obtained by coughing deeply and expelling the material that comes from the lungs into a specimen container. The sample is transferred to a slide and examined under a microscope. A positive result indicates a fungal infection in the lungs.
Review Date 12/10/2015
Updated by: Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital, Boston, MA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.