Abstract

During the past 10 to 15 years immunoassays have gained acceptance as the methods of choice in the diagnosis of a number of disease states. At present the immunodiagnostic techniques employed range from radioimmunoassay for haptens through immunofluorescence for autoimmune diseases to complement fixation for viral infections. All of these assays have their own individual limitations such as: safety, short shelf life and sensitivity. The development of enzyme immunoassays, in particular enzyme linked immunosorbent assay (ELISA), has led to a substantial literature which offers the view that enzyme immunoassays provide a safe, sensitive and specific alternative to standard methods for the detection of antibodies or antigens. The application of heterogeneous enzyme linked immunosorbent assays for the quantitation of haptens, macromolecular antigens and antibodies is reviewed.

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