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Aspergillus antigen skin test

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Aspergillus antigen skin test

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Aspergillus antigen skin test

Definition:

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 Names:
Immediate Aspergillus skin test

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How the test is 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.

How to prepare for the test:

There is no special preparation necessary.

How the test will feel:

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

Why the test is performed:

The test is to detect hypersensitivity to the mold aspergillus.

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