COVID-19 ELISA kits are assays designed to measure levels of COVID-19-related antigens in biological samples, such as plasma, serum, culture extracts, and cell lysates. COVID-19 antigens generally refer to proteins present on the SARS-CoV-2 virus or antibodies associated with COVID-19 infection. COVID-19 viral proteins include S (spike), E (envelope), M (membrane), and N (nucleocapsid). Immunoglobulins reactive to COVID-19 generally include IgG, IgA, and IgM antibody subtypes. COVID-19 ELISA kits utilize microtiter plates coated with specific antibodies and conjugated detection enzymes. The assay will produce a detectable signal proportional to the amount of COVID-19 antigens found in the sample. Click on the ELISA products below and visit the supplier for more information, including assay sensitivity and target specificity.