high PSA after RP

Sorry to hear of this
The first question to ask is if you have positive surgical margins; that is to say, did they get all the cancer. The usual presumption is that if the cancer was organ confined and you have no surgical margins then you should see a PSA reading of around 0.003. Only very ultra sensitive PSA tests can detect it any lower I think. So, for most people you should have a PSA reading of somewhere around that figure. If you have negative surgical margins, and you still have a PSA reading that is too high given your post-prostatectomy status, then the presumption is that the cancer has spread. Sadly, Pca has a 'tropism' for bone. This is why it is so difficult to deal with Pca once it has spread. Now, it is also the case that 57% of all prostate cancer victims have circulating epitheial tumor cells in their blood. Thus, there is always the possibily that you might have had some cells manage to get a foothold--but that is very improbable at this stage. Now, if you do have positive surgical margins, all is not lost. Arguably, it matters more where the margins are, rather than the fact that you might have one or more areas. I hope this helps and I hope the PSA reading was just a lab error. Good luck!