Histoplasma skin test

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Aspergillus antigen skin test

Histoplasma is an infection caused by a fungus that is usually found in the soil. Within the United States, most cases occur in certain areas such as the Mississippi, Missouri, and Ohio River Valleys, and in Puerto Rico. The skin test detects exposure to the fungus.

The test site (an area with hair, usually the forearm) is cleansed. The allergen is then injected just below the skin surface. The test is read at 24 hours and at 48 hours. Occasionally, the reactions may not be present until the 4th day.

No special preparation is necessary for this test.

There will be a brief sting as a needle is inserted just below the skin surface.

To see if the individual has been exposed to the fungus that causes histoplasmosis.

Review Date: 10/27/2005
Reviewed By: Daniel Levy, M.D., Ph.D., Infectious Diseases, Greater Baltimore Medical Center, Baltimore, MD. Review provided by VeriMed Healthcare Network.