By The Associated Press undefined What are the different types of coronavirus tests? There are three broad categories of coronavirus tests in the U.S. Two diagnose whether you have an active infection, and a third indicates if you previously had the virus. Here's how they work: GENETIC TESTS Most tests look for bits of the virus' genetic material, and require a nasal swab that is taken by a health professional and then sent to a lab. This is considered the most accurate way to diagnose an infection, but it's not perfect: The swab has to get a good enough sample […]

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