Just tell them no BP check...tell them what it was when you checked it.
For dentistry, I've only used BK H Pattaya and BK H Khon Kaen. Very high quality for the services I've had, including regular 6-month check-ups, cleaning, X-rays, fillings, and an implant. The price is very reasonable for what you are getting. NOS not available at BK H P dental department, fyi. Also, they provide all the paperwork and receipts for easy insurance filing.