Some of the cassette assays include Accu-Tell COVID-19 IgG/IgM Antibody Test (AccuBiotech Co., Ltd., Beijing, China), COVID-19 Spring IgM/IgG Rapid Test Cassette (Spring Healthcare Services AG, Zug, Switzerland) or COVID-19 IgG/IgM Rapid Test Cassette (SureScreen Diagnostics Co., Ltd., Derby, Great Britain) [14], which have proven to be suitable for the rapid identification of antibody responses, but have the lowest significance in scientific research. Here, CD40LG is linked to COVID-19.