There are three different ways to test for COVID-19: PCR tests, antigen tests and antibody tests. Each method is best for a different stage of COVID-19 infection. Used in sequence, all three methods ...

If I am convinced that my patient has COVID and the test comes back negative, we will leave that patient in isolation until we can repeat that RT-PCR test, just to make sure we’re not exposing our ...

Two types of COVID-19 tests, the rapid antigen test and the polymerase chain reaction (PCR) test, are available in the United States. The PCR typically relies on lab testing and is still considered ...

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 ...

Medically reviewed by Renee Nilan, MDMedically reviewed by Renee Nilan, MD Deciding on antigen vs. antibody tests when choosing a COVID-19 test is easier when the definitions and their function are ...

If you had COVID-19 symptoms in 2020, you probably would have masked up and braved a visit to a laboratory, doctor’s office, or clinic to get a polymerase chain reaction (PCR) test. A health care ...

In a recent study posted to the medRxiv* server, a team of researchers investigated how antigen concentration and viral load in different specimen types affected the performance of severe acute ...

A false positive result is possible with a rapid COVID-19 test. It happens when a person does not have COVID-19 but still tests positive for the disease. People can use a rapid COVID-19 test at home ...

A woman squeezing the sample liquid on a test strip while carrying out a Covid-19 rapid self test at home. Testing experts explain the latest data surrounding the accuracy of at-home rapid antigen ...