CD40LG and COVID-19: The 2019-nCoV IgG/IgM antibody determination kit, the Tigsun COVID-19 combo IgM/IgG rapid test (lateral flow), rapid response COVID-19 IgG/IgM test cassette (whole blood/serum/plasma), COVID-19 IgM-IgG combined antibody rapid test and iChroma COVID-19 Abtest kits were validated.