COVID-19 Human IgA PharmaGenie ELISA Kit (S1 RBD) (SBRS1721)

Manufactured by Assay Genie, this microplate ELISA kit targets the receptor-binding domain (RBD) within the S1 subunit of the SARS-CoV-2 spike protein. The assay specifically measures human IgA class antibodies, which are key indicators of mucosal immune activation and can serve as early markers of respiratory exposure. Recombinant S1 RBD antigen is pre-immobilised on the plate, and bound IgA is detected using an enzyme-conjugated anti-human IgA secondary antibody in an in vitro, research use only workflow. Dried blood spot compatibility broadens sampling options for population-scale seroprevalence studies where venipuncture is impractical.