Labcorp patient service centers collect blood specimens for the COVID-19 antibody test. Not sure what test you need? Select Labcorp patient service centers also offer COVID-19 PCR testing to individuals who are symptom-free and who have not been exposed to COVID-19. Learn more about the different COVID-19 tests available to you.The World's Leading Health Care Diagnostics Company‧Cancel Appointment‧Appointment FAQs‧Results‧Test Menu‧Patient.