Based only on my personal experience (I'm not a doctor or medical expert), doubling time at these low levels may not be accurate or linear. It took me about
4 years to get from 0.02 to 0.1 -- with a long pause at 0.02 and another pause at 0.04. When I hit 0.1 I then stayed there for 3 full years before there was another increase. But at that point I increased quickly to 0.4 within about
10 months. So, based only on my own experience, the increase was slow and erratic. And based on my experience I was able to avoid SRT and its risks for an additional 3 years after hitting 0.1 before having to pull the trigger.
As for the SRT, I had some minor side effects--rectal bleeding starting about
10 months after treatment end, and some urinary urgency for a few months (though I still get it sometimes). I'd be inclined to wait until 0.2 before taking the plunge into SRT, and with luck that might still be a few years down the road.
Best of luck, whatever you decide.
-DX March 2002 - PSA 9.4, 5 of 10 cores positive - 30-50%.
-RP April 2002. PT3B N0 MX Gleason=7 (3+4), 75% left lobe; small focus right lobe.
-Post-surgery PSA low of 0.01; slow rise to 0.4 (August 2009).
-SRT Jan/Feb 2010. Enlarged lymph node near prostate bed targeted. Casodex 3 months during SRT
-PSA 0.00 Apr 2013; <0.02 Sep 2013 (new lab)
Post Edited (Bohemond) : 1/7/2014 6:20:24 PM (GMT-7)