My lowest PSA after RP was .03. At 6 months .04 and when my OS stated undetectable I sensed this wasn't good and was pretty sure I had a problem. In a perfect world your PSA should be undetectable or at least trending down over your first 6 months. Much different than if you had radiation. Radiation sucked. ADT was tolerable. I found staying in today rather than projecting was helpful. Good luck and make sure to ask your doc questions.