Is there a PSA value below which you would not offer salvage radiation post-prostatectomy?

I am commonly asked the inverse question: if I use a "PSA cutoff" whereby a rise beyond this value will strongly favor treatment with post-op radiation. I think it is difficult to have a set value that applies for all patients, as the decision to treat should be individualized to patient and disease...

An ultra sensitive test can detect rising psa before it meets criteria for failure. That being said, in context of margin positive, any psa elevation confirmed by repeat testing few months apart, should be considered for salvage treatment. Although, I don’t know if treating then or waiting for PSA r...