Diagnostic agents, preparations and substances for medical purposes; Diagnostic biomarker reagents for medical purposes; Diagnostic kits comprised of medical diagnostic reagents and assays for testing of bodily fluids for use in disease detection, namely, COVID-19; Diagnostic kits consisting primarily of monoclonal antibodies, buffers, and reagents for use in disease testing; Diagnostic preparations for medical purposes; Diagnostic reagents for medicinal use; Medical diagnostic reagents and a...