"Since PR mentions there are only 12 approved test kits." There are 37 FDA individually authorized antibody tests. https://www.fda.gov/medical-devices/coronavirus-disease-2019-covid-19-emergency-use-authorizations-medical-devices/eua-authorized-serology-test-performance https://www.fda.gov/medical-devices/coronavirus-disease-2019-covid-19-emergency-use-authorizations-medical-devices/eua-authorized-serology-test-performance "This seems to be the first approved company." That was the first EUA authorized saliva virus test, not antibody test.