• While cotton has not been used on COVID-19 swabs, on April 21, the FDA, using emergency authorization, gave permission to the Laboratory Corporation of America, known as LabCorp, to use a ...

— The forensic scientist cut off the tip of a cotton swab and taped it to a lab sheet next to a snippet of stained clothing. Always save a piece of what you test, Mary Jane Burton instructed her ...

Your doctor will quickly and gently move a cotton swab around the tonsil area in the back of your mouth. They’ll place it in a germ-free container and send it to a lab for testing.