KOH test; Fungal smear - sputum; Fungal wet prep; Wet prep - fungal
A sputum fungal smear is a laboratory test that looks for fungus in a sputum sample.Sputum is the material that comes up from air passages when you cough very deeply.
A sputum sample is needed. You will be asked to cough deeply and spit any material that comes up from your lung into a special container.
The sample is sent to a lab. A small amount is lightly smeared onto a microscope slide and mixed with potassium hydroxide (KOH). The slide is examined under the microscope and checked for fungus parts.
There is no special preparation.
There is no discomfort.
Your doctor may order this test if you have abnormal sputum production or signs of a lung infection.
Limper AH. Overview of pneumonia. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 97.
© 2011 University of Maryland Medical Center (UMMC). All rights reserved.
UMMC is a member of the University of Maryland Medical System,
22 S. Greene Street, Baltimore, MD 21201. TDD: 1-800-735-2258 or 1.866.408.6885