The difference between 0.028 and 0.030 is miniscule. That difference is probably far less than the sums of the sources of test & source variation...far less.
And, it is a long way from AUA's defined threshold of biochemical recurrence...which I posted to your in a seperate thread. That definition was, of course, created exactly for men in your situation.
Let's see if this shows up:
0.20 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01
I----I----I----I----I----I----I----I----I----I----I----I----I----I----I----I----I----I----I----I----I----I
^ ^ ^ ^
BCR is 2 measurements you are here
above 0.20
You have already had surgery. You know of the issues you have already had. Secondary radiation will be more difficult. If there are signs you need it, I wouldn't hesitate because it can absolutely be curative...but there will be consequences.
Have a frank talk about these numbers with your surgeon. I'm not seeing signs that SRT (salvage radiation therapy) is needed.
Something seems to be amiss in why he is suggesting it...