This CE marking notification, completed through Obelis S.A. under EU Directive 98/79/EC, authorizes Microbix’s REDx FLOQ SARS-CoV-2 antigen swab controls covering positive and negative swab controls for immunodiagnostic assays for distribution across Belgium and other EU/EEA Member States. These products support laboratory performance monitoring for SARS-CoV-2 antigen detection workflows throughout Europe.