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 ...

More than two years after the World Health Organization (WHO) declared an end to the emergency phase of the Covid-19 pandemic ...

In early January, more than 700 Stanford University athletes took rapid Covid tests upon returning to the campus. Those who tested negative — and some who tested positive — were also given PCR tests.

FORT LAUDERDALE, Fla. — With COVID-19 cases on the rise, taking an easy-to-get rapid test can give you quick results. But the timing has become tricky. If you have COVID symptoms, such as fever, cough ...

At-home COVID-19 tests have become commonplace for many households, but knowing when exactly to take a rapid test — or when to throw old ones out — isn't always straightforward. Here's what health ...