RT - PCR Test A method of testing by taking a nasal/throat swab from a patient. It involves extracting ribonucleic acid or RNA, which is the genetic material of the virus.
Antigen Test Helps identify the antigens related to the COVID-19 virus. An antigen test, also known as a rapid antigen test, is a rapid diagnostic test that gives results faster than molecular tests. But there is a drawback, antigen tests have a higher chance of missing an active infection. 
Antibody Test Also known as serological tests, are used to find out the presence of a virus in a body. In this method of testing, blood samples are used to find antibodies. This process also detects the number of antibodies that are produced by the immune system.
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