A new US study has shown that people with Covid-19 may not test positive on rapid tests until after they’ve become infectious to others, providing unclear guidance on whether it’s safe to join ...

This is because on the first day you perform an at-home test, it might not be able to detect low levels of the virus and you may get a false negative, even if you’re symptomatic, says Dr. Sharon ...

As of May 2022, the U.S. is experiencing another uptick in the number of COVID-19 cases. High rates of infection in Europe and Asia, along with the continued emergence of new sub-variants, such as ...

Recent research indicates these nasal swab tests may be less sensitive to the coronavirus’ omicron variant in the earliest days of infection. A BinaxNOW rapid COVID-19 test made by Abbott Laboratories ...

In a study involving nearly 1,000 patients seen at the Baltimore Convention Center Field Hospital (BCCFH) during a five-month period in 2022 - researchers at Johns Hopkins Medicine, the University of ...

NEW YORK -- Millions of Americans have purchased rapid COVID-19 tests online or at local stores and signed up to receive test kits through a free government program. Unlike conventional, lab-processed ...

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the ...

As the omicron variant continues to sweep the United States, the FDA is being urged to gather more information about how well at-home Covid tests are able to detect the modified virus. Mounting ...

Marianna Parker, a Boston-area pediatrician, wanted to make sure she, her husband, and her toddler didn’t have Covid-19 when they developed a nasty cold around Dec. 18. Over the course of a week she ...

New research suggests Omicron may be easier to detect in saliva than nasal samples. Some experts recommend swabbing your throat then your nose for a COVID-19 rapid test, even if the test doesn't say ...