The SARS-CoV-2 IgG detection kit is designed for qualitative detection of human IgG antibodies in serum collected from individuals suspected of prior infection with the virus that causes . This fast and simple ELISA uses the trimeric form of the SARS-CoV-2 Spike protein (BPS Bioscience #100728) to identify IgG antibodies that indicate a previous infection with SARS-CoV-2. The Spike protein is expressed on the viral membrane as a trimer, which means this kit measures IgG antibodies in a more physiologically relevant context than many other commercially available ELISA kits.