I went to an appt with an Endocrinologist in BKK to refill my meds, the Dr recommended testing every 3 months. I asked the hospital if they can write a letter for visa support and this was their reply:
"Greetings from Samitivej Sukhumvit Hospital.
Regrettably, we do not have service to provide letter for visa application.
We could only provide you medical certificate and you may contact Embassy for more information and further assistance."
Is this normal? Is the medical certificate enough? Should I try another hospital?