PSA post radiation: how to interpret?
PSA post radiation? The correct use of PSA is as a tracking / monitoring tool. Now, my docs put me on Lupron two months before radiation, and we have be monitoring PSA and testosterone. Now I am about to start monitoring for disease recurrence by monitoring PSA after I stop taking Lupron. It occurs to me I have no idea what radiation of the prostate alone does to PSA levels. Is it known? In other words, when the effects of Lupron wear off, I do not have any idea of a post radiation baseline level of PSA, if any, will be. I recently stopped Lupron and awaiting lab results. If the radiation was successful, will I still see PSA, and if so, I have no baseline level to compare it to assess disease status. My suspicion: radiation doesn't kill all the prostate cells, so I will likely see PSA when Lupron fades. But, what level, and how to interpret it?