Check out Everlywell (google it). Varity of tests, dunno if your specific test is offered. If not, call your health department and ask. They should know.
Not impossible, just very difficult. My advise---if you want to visit Thailand, have all your ducks in order and ready to go. When you see a clear spot in the storm, GO! ...but be prepared to get stuck there, possibly long term. I left Thailand the end of February 2020 and reentered a totally different world when I got home. Here in America a few responsible media sources are no longer talking about eradicating the virus but rather a strategy of containment in hotspots. I hope I am wrong, but I think this virus is here to stay...in one variant or another. Now, we are the ones who have to change.
Thanks very much for this. FYI - I read somewhere that Thailand will most likely use the IATA App for Vaccine Passport and the IATA says the app will be available on the Apple platform by mid April.
To the best of my knowledge, the highlighted words say "Waiver in case of staying in excess Not more than 24 hours allowed........" and some other irrelevant stuff. Bit of advice though...next time, cut your trip short an extra couple days or so. Easier to not have problems if you follow the rules. :)