Antibodies, A Laboratory Manual, Second Edition, Edited by Edward A. Greenfield



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Indirect Immunometric ELISA

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This assay facilitates the immunometric determination of assay-associated reagents including the capture and detection antibodies as well as the analyte. It can precede the development of a sandwich ELISA in which optimal antibody concentrations are applied for the quantitative measurement of the antigen. The main objectives during the development of an ELISA are (1) to achieve the optimal signal-to-noise ratio for the desired sensitivity of the assay, (2) to ensure the reproducibility of the assay for the analyte at hand, and (3) to facilitate accurate measurement of the analyte within the dynamic range of the assay. The signal-to-noise ratio of an assay is defined as the signal obtained in the presence of analyte in comparison to the signal obtained in the absence of analyte. An overall increase in signal-to-noise ratio ensures assay suitability for the detection of smaller amounts of antigen present in biological samples.

Antibodies: A Laboratory Manual, Second edition
Antibodies: A Laboratory Manual, Second edition
Antibodies: A Laboratory Manual, Second edition

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