Shop 25 lbs., 20 mg, Cellulose, ProCare® Super-Lite A.F.O., For use in Monitoring the Performance of the VITROS 3600 Immunodiagnostic System and the VITROS 5600 / XT 7600 Integrated Systems for the Qualitative Detection of the SARS-CoV-2 Nucleocapsid Antigen