How is a COVID-19 antigen test performed? Tech PWN November 11, 2020 18:37 Updated This test is conducted by a nasal swab. The nasal swab test requires insertion of a swab into your nose. Related articles What is the difference between a COVID-19 antigen and PCR test? What is a COVID-19 antigen rapid test? Are there any limitations to COVID-19 antigen tests? What is the difference between a COVID-19 antigen and antibody test? What will my COVID-19 antigen test results tell me? Comments 0 comments Please sign in to leave a comment.