The concern is the “Flowflex SARS-CoV-2 Antigen Rapid Test (Self-Testing)” could provide false results. A false positive would mean the test says someone has COVID-19 when they don't.

The warning is for the “Flowflex SARS-CoV-2 Antigen Rapid Test (Self-Testing)” from ACON Laboratories. The test comes in a dark blue box with white lettering and symbols in the lower right corner of ...