I used Randox because of social proof and price. Randox was listed by British Airways on this website was the cheapest on that website.
I don’t recommend using Day 2 tests for the return trip. Day 2 tests have to be mailed back to the lab. So it takes some days to get results. For the return flight, you need results back before you fly. So I would worry that I might not get results back in time for my flight.
I used Randox because of social proof and price. Randox was listed by British Airways on this website was the cheapest on that website.
I don’t recommend using Day 2 tests for the return trip. Day 2 tests have to be mailed back to the lab. So it takes some days to get results. For the return flight, you need results back before you fly. So I would worry that I might not get results back in time for my flight.