two sars‑cov‑2 antigen test kit for self testing with positive results.

two sarscov2 antigen test kit self testing positive results tests analyzing selftest coronavirus pandemic equipment screening lockdown prevention check hospital nose instruction infection diagnostic swab result quick covid immune 19 usa lab medical cassette antibody virus covid19 rapid sick igm immunoassay diagnosis laboratory holding negative disease health quarantine epidemic healthcare corona hand detection one step saliva grey background close