Immunoassay method, test strip for use therein, and immunoassay apparatus

摘要

An immunoassay method of the present invention is an immunoassay method for assaying a protein antigen, including the steps of: (a) providing a first antibody and a protein antigen having, embedded therein, an epitope to which the first antibody can specifically bind; (b) contacting, to the protein antigen, a second antibody that binds to at least a portion of the protein antigen excluding the epitope so as to expose the epitope of the protein antigen; and (c) contacting the first antibody to the epitope of the protein antigen after the step (b).