Aspergillus antigen skin test
Aspergillus is a mold. An antigen is a substance that stimulates the immune system to eliminate or fight foreign substances in the body. This skin test detects hypersensitivity to aspergillus.
Alternative NamesImmediate Aspergillus skin test
Why is the Test Performed?
The test is to detect hypersensitivity to the mold aspergillus.
How is the Test Performed?
The test site (an area with hair, usually the forearm) is cleansed. The antigen is then injected into the area. If there is a positive reaction, the area should turn red and develop a lump (similar to a mosquito bite) within ten minutes of injection. The lump should be at least 3 millimeters in diameter to be considered positive.
Preparation for the Test
There is no special preparation necessary.
How will the Test Feel?
There will be a brief sting as a needle is inserted just below the skin surface.
Aspergillus antigen skin test Risks
There is a slight risk of anaphylactic shock (a severe reaction).
Normal Results for Aspergillus antigen skin test
A negative reaction or no inflammation at the test site is normal.
What Abnormal Results Mean
If a positive reaction occurs (the test site is inflamed), you are hypersensitive to the aspergillus mold. You may have the disease known as pulmonary aspergillosis.
Reviewed By: Kenneth Wener, M.D., Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, MA. Review provided by VeriMed Healthcare Network.
Copyright 2013 A.D.A.M., Inc.