PCR test: Detects the presence of viral RNA. It is very accurate and efficient, but it is expensive
and needs professional staff for sample handling, and needs about 3.5h to get the result;
Antibody test: The antibody test is performed on blood. This test can indicate that you had COVID in the past;
Antigen test: Use a nasal or throat swab to get a fluid sample, antigen tests can get results in 5-10 minutes.