FDA Authorizes Use of UArizona COVID-19 Antibody Test; Testing Expanded to All Arizonans Age 18 and Older FDA Authorizes Use of UArizona COVID-19 Antibody Test; Testing Expanded to All Arizonans Age 18 and OlderTeaser Body: The antibody test determines who has been exposed to and developed an immune response against COVID-19. Sections: public Read more about FDA Authorizes Use of UArizona COVID-19 Antibody Test; Testing Expanded to All Arizonans Age 18 and Older