For those needing to do a day PCR test in Bangkok on day 5, I did mine yesterday at

Thonburi Bamrungmuang Hospital

02 220 7999

[members only]

It was very easy and only 10 mins from Chinatown/Silom. I went at 8am and was done by about 840am. The test can be done on day 5, 6 or 7, you need to take the pink form with you.

The only bad bit was the results come in at 4pm. I could not log into the system and tried every possible combination. I called them back and they were friendly and helpful but was hard to give them my name, date of birth, passport number, email address and telephone number over the phone. Took several attempts lol

I eventually got the results at 9pm... Wasn't the most relaxing evening.

But overall was easy and very organised. I had no issues taking the test. And after the test you can wake up properly with a traditional Thai coffee at the Starbucks attached to the hospital.

You need to be there between 8 and 9 am for same day results. I recommend 8 as it was getting busier as I left...