Method of effecting immunoassay by using affinity chromatography

摘要

A method of effecting an immunoassay using affinity chromatography which a sample is injected into a reusable column charged with antibody applied on a solid support, an eluent is injected into the column to elute antigen bound with the antibody on the solid support, and an amount of eluted antigen is measured. In order to mitigate the influence of carry-overs of successive samples, blank values are corrected such that they include the carry-overs of previously measured samples, while elution time periods are kept constant. In one embodiment, the elution time periods are corrected such that blank values for respective samples are made constant.