Money FDA warns against using unapproved COVID-19 tests because of a ‘high risk of false results’ January 12, 2022Brett Molina, USA TODAYComments Off on FDA warns against using unapproved COVID-19 tests because of a ‘high risk of false results’ The FDA is warning about the spread of fake at-home COVID tests producing false results. Here's how to make sure the test you received is legitimate.