Some doctors use 20 points as the cut off, and others use 30 points...both are pretty acceptable numbers and should be 'considered' for a Dx. The tilt table is the gold standard test for POTS. The other in-office checks are just for initial 'preliminary' Dx. Many people can have a 20 point drop in BP in the office when just simply dehydrated. The tilt table will be the confirmation.

I'm glad they are now taking your BP drops seriously as POTS and tilt table is being done next week.