I'd worry. But then again, see my name?
<--------
I certainly would not wait 6 months for the next test. I'd ask for a retest at 3 months. Why? Because every, single, guy who has had a biochemical recurrence when their PSA was initially at 0.01, passed through 0.02 on the way to their treatment threshold. Back in the Stone Age when analyzers were gerbil powered (pre-2004) the typical threshold was 0.2 twice in a row. Back then, typical analyzer resolution was 0.1. +/- 0.1
Now machines are more selective and have 2 and 3 digit resolution. Most machines are now better than 0.003! but labs will only report to a minimum value of <0.01 or <0.02.
Some high risk guys (like me) have an action threshold of 0.05. That gives us at least a one year head start at killing the beast before it has time to thrive. Don't wait.
To get the most consistent results, you need to be consistent yourself. Control what you can control. Go to the same lab, on the same day of the week, and the same time of day. Heck, I even eat the same food the night before and eat nothing in the morning. I know someone here who even wears the same clothes. Really!
So, yeah, I'd start doing something about
it. A 3 month PSA is a start.
Oh, by the way, of course your doc thinks everything is going well. Why should he be concerned? YOUR name is on the lab results - not his. He gets paid either way. Do you think he'd say "Hmmm. 0.02. Darn! There's a good chance I didn't get it all."? Not one doc on the planet has ever spoken those words out loud to a patient.
I have Tuesdays, Thursdays and Saturdays
open if you want me to worry for you.
Good luck,
Jeff