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

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

While you may be used to thinking of COVID tests as interchangeable, there’s a big difference between the standard at-home antigen test and a PCR (molecular) test. Almost five years in, it’s important ...

With the semester just beginning and over 100 positive COVID-19 test results on campus, University health experts agree rapid antigen tests are a pivotal tool for students to keep both themselves and ...

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 ...

If someone has telltale COVID-19 symptoms but keeps testing negative on antigen tests, they may want to get a PCR test to be absolutely sure they don’t have the disease.

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

What's the difference between a PCR and antigen COVID-19 test? A molecular biologist explains At this point in the pandemic, you or someone you know has probably received at least one COVID-19 test.

Testing experts explain the latest data surrounding the accuracy of at-home rapid antigen testing for COVID-19.

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