The accuracy of the RT-PCR test depends on timing; tests are best given within 10 days of COVID-19 symptom development.

There are three different ways to test for COVID-19: PCR tests, antigen tests and antibody tests. Here are the differences.

The antigen concentration in the sampled oral or nasal cavity and viral copies in the NPS specimens restricted the comparison of RDT performance relative to RT-PCR.

Researchers compared the accuracy of rapid antigen tests with reverse transcriptase–polymerase chain reaction (RT-PCR) tests in detecting SARS-CoV-2 infection among 723 college athletes ...

The coronavirus disease (COVID-19) is conventionally diagnosed using a reverse transcription-polymerase chain reaction (RT-PCR) test, which provides accurate results at the expense of time.

With the relaxation of mask-wearing mandates, there’s even more need to know how much over-the-counter tests help.