Canadian Medical Guide > Analytical, Diagnostic and Therapeutic Techniques and Equipment > Diagnosis > Laboratory Techniques and Procedures > Immunologic Tests > Immunoassay Terms and Definitions

Immunoassay

Medical Definition:	Immunochemical assay or detection of a substance by serologic or immunologic methods. Usually the substance being studied serves as antigen both in antibody production and in measurement of antibody by the test substance.
Guide Notes:	GEN or unspecified; prefer specifics; NIM

Immunoassay Categories.

	Immunoblotting - Immunologic method used for detecting or quantifying immunoreactive substances. The substance is identified by first immobilizing it by blotting onto a membrane and then tagging it with labeled antibodies.
	Immunoenzyme Techniques - Immunologic techniques based on the use of: (1) enzyme-antibody conjugates; (2) enzyme-antigen conjugates; (3) antienzyme antibody followed by its homologous enzyme; or (4) enzyme-antienzyme complexes. These are used histologically for visualizing or labeling tissue specimens.
	Immunosorbent Techniques - Techniques for removal by adsorption and subsequent elution of a specific antibody or antigen using an immunosorbent containing the homologous antigen or antibody.

Immunoassay Medical Definitions and Terms

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