An enzyme immunoassay is any of several
immunoassay
An immunoassay (IA) is a biochemical test that measures the presence or concentration of a macromolecule or a small molecule in a solution through the use of an antibody (usually) or an antigen (sometimes). The molecule detected by the immunoass ...
methods that use an enzyme bound to an antigen or antibody. These may include:
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Enzyme-linked immunosorbent assay
The enzyme-linked immunosorbent assay (ELISA) (, ) is a commonly used analytical biochemistry assay, first described by Eva Engvall and Peter Perlmann in 1971. The assay uses a solid-phase type of enzyme immunoassay (EIA) to detect the presence ...
(ELISA)
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Enzyme multiplied immunoassay technique
Enzyme multiplied immunoassay technique (EMIT) is a common method for qualitative and quantitative determination of therapeutic and recreational drugs and certain proteins in serum and urine.
It is an immunoassay in which a drug or metabolite in ...
(EMIT)
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Fluorescent enzyme immunoassays (FEIAs)
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Chemiluminescent immunoassay Chemiluminescent immunoassay (CLIA) is a type of immunoassay employing chemiluminescence.
See also
* Enzyme-linked immunosorbent assay
The enzyme-linked immunosorbent assay (ELISA) (, ) is a commonly used analytical biochemistry assay, first de ...
s (CLIAs)
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Radioimmunoassay
A radioimmunoassay (RIA) is an immunoassay that uses radiolabeled molecules in a stepwise formation of immune complexes. A RIA is a very sensitive in vitro assay technique used to measure concentrations of substances, usually measuring antigen conc ...
s (RIAs)
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