Jeff,
Sorry to hear about your PSA rise... As you can see, I had a similar issue. I would always insist on the more accurate PSA test with the extra decimals... a 0.2 could well be 0.16 -> 0.24... a 0.1 could be 0.06 -> 0.14... pretty hard to track the small rises rises and doubling times with the less precise tests.
BCR (bio chemical reccurrence) after surgery is defined in the literature at a PSA of 0.2 or 0.4, depending on the rpaper/study. Another metric being used as an indicator for possible SRT is to see a 3 time consecutive rise in the PSA. That is what happened to me. My uro suggested SRT at this time even though I was only at 0.13. The oncologist agreed. I am also one that tends to want to attack possibility of BCR PCa the sooner the better, so I opted for SRT after more research the next couple of months.
Some of the literature suggests that early SRT (especially before it gets to 0.5) can prove to be beneficial in certain cases where the pesky PCa cells are likely to still be localized in the original prostate bed. Characteristics supporting this are slight positive margins and a non-detectable PSA initially after the RP. Then followed by small but steady rises in the PSA. My post op patholgy and rising PSA seemd to fit those charateristics, so I started 32 seesions of IMRT SRT for a 64 gys total dosage. I am today at 18 sessionscompleted with 14 to go... No side effects yet except for a little fatique/drowsiness.
Anyway, google and poke around for more info... as well as reading the posts on this forum. And once again, sorry to hear that you may have to leave the zero club for awhile... I had to... I pray that we can all be in the zero club and stay there!!!
pasayten