FYI, EHAS are sticklers about not accepting oral swabs, even though it's still considered a PCR-RT test, and some claim even more accurate than nasal. For our recent trip, my oral swab test was eventually accepted after several resubmittals of application, my wife's was not....luckily here in houston it's easy to find places that will do the testing for free, with pretty quick turn-arounds, so we both got tested again, nasal swab this time, and she was then quickly approved