CD40LG and COVID-19: Among the many currently available antibody-based tests, the popular ones are lateral flow immunoassays (BioMedomics quick test and Surescreen rapid test cassette), time-resolved fluorescence immunoassays (Gold site diagnostics kit), and colloidal gold immunoassays (VivaDiag COVID-19 IgG-IgM test and Assay Genie rapid POC kit).