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 ...

Medically reviewed by Kate Colby, MPH You may get a PCR test, which can show a positive result for up to three months after recovery. If you take a rapid antigen test, it may not detect COVID after ...

In a recent study posted to the Lancet preprint* server, researchers assessed the utility of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) rapid antigen testing (RAT) for patient triage ...

The question quickly arose whether existing rapid antigen tests could detect newly emerging variants. Using clinical samples obtained from diagnostic labs throughout the U.S. from 2020 to 2023, the ...

SYDNEY, AUSTRALIA - SEPTEMBER 29: In this photo illustration a man uses a COVID-19 rapid antigen test kit at home on September 29, 2021 in Sydney, Australia. Australians will be able to use rapid ...

About 60% of healthcare workers participating in an optional rapid antigen testing program at UCLA tested positive at day five, and about 50% were positive at day seven after initially testing ...

Last week, I was about to go on a date, and because I'm severely immunocompromised, we agreed he would take a COVID test ...

With the ending of COVID-19 PCR testing by Healthy Yolo Together and Healthy Davis Together, Yolo County is reminding residents of the many other testing resources still available to the community.

In a Feb. 4 email to the Cornell community, Vice President of Student and Campus Life Ryan Lombardi announced that the University’s COVID-19 surveillance testing plan will be modified to reduce the ...

BEIJING, April 25 (Reuters) - China's foreign ministry said on Tuesday that all inbound travellers will only need to show COVID-19 antigen tests result taken within 48 hours before boarding flights ...