Hey there Spottydog10 and welcome to the forum.
There's a few other members located in the U.K. so keep your eyes
open for them. (I am located in Australia). You are probably worrying about
nothing. There are quite a few members who have low reading residual PSAs. what is important is that it remain fairly static and not increase. Many members don't even want reports that have the ultra-sensitive result and theirs simply reports back as <0.1 (less than .1 ..... undetectable). Hazarding a guess the test equipment used on you probably has a lower detection limit of 0.03 (meaning it cannot detect PSA if it is below this level) and even then the same sample run twice will yield slightly different results. (perhaps .05 or .03) so all in all to date it seems you have a most excellent result. One last tip: Make sure you ask your doctor for a printed copy of all PSA results and the post-op pathology. If you haven't already got it, get a copy of the biopsy as well and keep your own folder. If there's any resistance tell him you have a vital interest in your own health and an understanding this disease.
Happy New Year
Bill
You'll find some good reading on PSA here:
www.prostate-cancer.org/education/preclin/McDermed_Using_PSA_Intelligently2.html