A single PSA is just a number, though 6.0 is enough to get the Docs attention. I imagine they will tell you to come back for another test to see if it caused by a testing error or another factor. If you have ever had a previous test they will be looking for the acceleration rate which is how fast it is increasing which is a good measure of its aggressiveness. Get to an experienced doc who knows things, and get multiple opinions before deciding what to do next.
I understand it's a little easier with the FAA these days but when I joined the club they were not friendly to pilots above 5.0 who for whatever reason did not follow conventional treatments. Bruce should be able to tell you wat their triggers are these days.
FWIW, there are lot of us that have walked that path before, you are not alone in this journey.