How low should my PSA go after brachytherapy?
We would like to see the PSA eventually reach a low less than 0.5 ng/ml. This appears to be the ideal range, though most patients who get to any value under 1.0 will do well in the long term. Patients who reach a value less than 0.5 will be more likely to remain low and therefore appear to be cured. Note that this is different from patients who undergo surgical removal of the prostate, since any detectable PSA means there is likely cancer present. In patients who have surgery and removal of the prostate, for example, the PSA after prostatectomy level if cured should be less than 0.2 ng/ml.
