Medical Dictionary Search Engines

Please be patient! It may take up to ONE minute to load all the Engines.
Problems? Please contact our support.


Search For


Specialty Search




Other encyclopedia topics: A-Ag Ah-Ap Aq-Az B-Bk Bl-Bz C-Cg Ch-Co Cp-Cz D-Di Dj-Dz E-Ep Eq-Ez F G H-Hf Hg-Hz I-In Io-Iz J K L-Ln Lo-Lz M-Mf Mg-Mz N O P-Pl Pm-Pz Q R S-Sh Si-Sp Sq-Sz T-Tn To-Tz U V W X Y Z 0-9   

Sputum smear (KOH test)

Alternative names

KOH test; Fungal smear


Sputum smear (KOH test) is a test for the presence of fungal microorganisms in sputum.

How the test is performed

Obtain a sputum sample by coughing deeply and expelling the material that comes from the lungs (sputum) into a specimen container. A smear of sputum is prepared with potassium hydroxide (KOH) and examined under the microscope. If it is positive, fungal cells can be observed.

How to prepare for the test

There is no special preparation.

How the test will feel

There is no discomfort.

Why the test is performed

The test may be performed when there is abnormal sputum production or when an infection of the lungs is suspected.

Normal Values

No presence of organisms is normal.

What abnormal results mean

Abnormal results indicate the presence of fungus such as histoplasmosis, coccidioidomycosis , or blastomycoses. White blood cells called eosinophils may also be present.

Additional conditions under which the test may be performed:
  • Acute pulmonary eosinophilia (Loeffler's syndrome)
  • Coccidioidomycosis; acute (primary) pulmonary
  • Coccidioidomycosis; disseminated

What the risks are

There are no risks.

Special considerations

Not applicable.

Update Date: 1/26/2004

Daniel Levy, M.D., Ph.D., Infectious Diseases, Greater Baltimore Medical Center, Baltimore, MD. Review provided by VeriMed Healthcare Network.

©2009 [Privacy Policy] [Disclaimer]
Last updated: Tue, 06 Jan 2009 00:20:03 GMT