My understanding is that regular PSA testing sensitivity reports less than .1 as undetectable after RP.

uPSA testing at Quest reports less than .02 as undetectable. Johns Hopkins lab reports uPSA less than .03 as undetectable.

And I've seen lower parameters posted from others.

Not at all clear to me why some Rad Oncs/Med Oncs use PSA vs uPSA tests.

I know that I will "lose my sh*t" if/when my PSA rises above .02, but is still less than .1

And a couple of friends post salvage radiation are being tested using regular PSA test.

There has been some thought that the Ultrasensitve testing can result in unnecessary anxiety when very low levels change or vacillate. 🤔