Originally Posted by anabolism

It says it's "Departures Area," which to me sounds like airside. I'd suggest calling them to check. If so, they have a rapid antigen test with results in 15-20 minutes for 30 euro. Presumably they will email you the results, so no need to wait for them.

For the U.S., even an antigen test is sufficient, so any of the offered tests would be fine. You could do the test on your way to your hotel, presumably receive the email results that evening, giving you plenty of time to have the hotel print them for you (I usually email the front desk to have a page printed) and also load them into VeriFLY if you use that (which AA supports).

Order them ahead of time and have them sent to your U.S. address. If you order from eMed or an airline, it's $150 for six tests. If you order from Optum you can get two or three instead of six, but at a higher cost per test. It's always good to travel with at least two, just in case one is inconclusive or spoiled somehow.