• Formulated with purified, intact organisms. • Organisms are chemically modified to render them noninfectious. • Refrigerator stable—store between 2 and 8°C. • Purified protein matrix treated with 0.09% sodium azide. • To evaluate the performance of nucleic acid tests for determination of the presence of SARS-CoV-2 Omicron Variant RNA. • 6 x 0.5 mL vials.