Sputum fungal smear
Alternate Names : KOH test, Fungal smear - sputum, Fungal wet prep, Wet prep - fungal
Definition
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.
Why is the Test Performed?
Your doctor may order this test if you have abnormal sputum production or signs of a lung infection.
How is the Test Performed?
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.
How to Prepare for the Test?
There is no special preparation.
How will the Test Feel?
There is no discomfort.
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