immunoassay

Definition / meaning of immunoassay

A test that uses the binding of antibodies to antigens to identify and measure certain substances. Immunoassays may be used to diagnose disease. Also, test results can provide information about a disease that may help in planning treatment (for example, when estrogen receptors are measured in breast cancer).

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Find More About 'immunoassay'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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