The first challenge with rapid at-home self tests for COVID-19 is getting one. But once you have a test, there are now growing questions about what body part you should swab to get the most accurate ...

A mouth swab drug test detects substances in a person’s system by checking for the presence of drugs or alcohol in the saliva. People may also refer to a mouth swab drug test as an oral fluid drug ...

One Canadian said it felt like a painful poke to his brain. An American heard crunching sounds in her head. A Frenchwoman suffered a severe nosebleed. Others got headaches, cried or were left in shock ...