PCR tests, pre-departure checks and self-isolation are back for travellers arriving in the UK. Weeks after international travel rules were eased to allow cheaper and faster lateral flow (antigen) ...

Last week, I was about to go on a date, and because I'm severely immunocompromised, we agreed he would take a COVID test using one of my rapid home molecular tests. It was a courtesy—he felt perfectly ...

Researchers often call the polymerase chain reaction test – known as the PCR test – "the gold standard" for detecting the COVID-19 virus. The test is considered highly reliable and effective, and it ...