Principle of the procedure

This kit is based on colloidal gold immunochromatography and uses double-antigen sandwich assay to detect novel neutralizing antibodies against coronavirus in peripheral whole blood. The T line of the novel coronavirus neutralizing antibody test cassette was coated with recombinant novel coronavirus S-RBD antigen, and the C line was coated with sheep anti-S-RBD polyclonal antibody. During detection, the samples were dripped into the sample well, and the neutralizing antibodies of the novel coronavirus was combined with the recombinant S-RBD antigen of the novel coronavirus labeled with colloidal gold, a solid phase the recombinant S-RBD antigen of the novel coronavirus - novel coronavirus neutralizing antibodies - labelled the recombinant S-RBD antigen of the novel coronavirus - colloidal gold complex at the T line position, solid-phase sheep anti-S-RBD polyclonal antibody - the recombinant S-RBD antigen of the novel coronavirus-colloidal gold complex was formed at the C line.