Taking my first international business trip in a couple years in a week in a half. ORD-LHR-ORD.

Saw that UK waived its testing requirement upon entry, but US requires a test within a day of the flight to return. It says a viral test. Just wondering what types of tests they will accept? Can I use the Binaxx rapid tests I bought at home or do I need a test from a medical/testing facility?


Thanks,