To say again, I have seen one surgeon and two oncologists who concur that what is called ‘super-sensitive assay’, i.e. PSA down to multiple decimal points, is generally a waste of time and causes more worry than it’s worth.
The top PCa oncologist at the Royal Marsden, the leading cancer hospital in Britain, (where they only test to 0.04), conceded that super-sensitive is only of use in a very few cases, which I suppose is the reason my local billion-pound super-hospital only tests to <0.1 = ‘undetectable’.
My advice to you, Baxt, is to stop worrying, dreaming up fantasy PSA testing regimes, and presume your prostatectomy was successful until (if ever) you discover it was not.
Best of luck for the future and your continuing recovery.