A health care worker will take a sample of your respiratory tract. It won’t hurt, but it might be a little uncomfortable. They’ll put a small cotton swab up your nose. They may also swipe your throat. If you’re coughing up mucus, they might test that, too.
They’ll send your sample to a lab to check it for SARS-CoV-2. That’s the virus that causes COVID-19.
Each state has one or more public health labs that does testing. That number is growing. For information about your state's health department, check online at the CDC.