Colloidal Gold Colloidal Gold Technology Colloidal gold immunochromatography (GICA) refers to a rapid solid-phase membrane immunoassay technique that uses a combination of colloidal gold labeling technology, immunodetection technology, and protein chromatography technology using nitrocellulose membrane as a carrier. The principle is to use nitrocellulose membrane as a solid phase carrier, and the sample solution swims […]