I am on some meds and once in a while I need to get my blood tested for some stuff (not std or any other sexual related things). Tried to get these tests in a hospital once and they did not want to do it. Don't know if it is the same in Bangkok. In Pattaya found, through PA, a great clinic but I am not going to Pattaya this trip.
They say (google) the red cross clinic or Bumrungrat Hospital is the best for this. Anyone ever been? or other recommendations?