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

The two types of diagnostic tests right now being utilized to detect various forms of COVID-19 in the United States are the PCR test and the antigen test.

When you think about getting tested for COVID-19, you’re most likely picturing two types of tests: the at-home rapid antigen tests you can buy at the drugstore and the PCR test where the results ...

Rapid, or antigen tests, are more commonly referred to as at-home COVID tests. Samples for a rapid test are usually taken by nasal swab, and results are generally produced between 15-30 minutes.

At-home rapid tests for COVID-19 are more convenient. But experts say there are still times when a PCR test is useful.

Researchers investigated how antigen concentration and viral load in different specimen types affected the performance of SARS-CoV-2 rapid diagnostic tests (RDTs).

MORE: Doctors rush to understand COVID-19's second-week crash An accurate, FDA-authorized antigen test could be a "breakthrough" innovation to help screen more people for the virus, according to Birx.

What is a polymerase chain reaction (PCR) test? Here, we describe how the tests work and why health experts and researchers use them.

How many times have you stared at a home COVID-19 test, waiting for the faint line that confirms an infection? Those home ...