@jc76 and @jeffmarc,
Reading your posts, you agree more than you disagree.

"An undetectable PSA level is generally considered below 0.1 ng/mL, but with newer, ultra-sensitive tests, it can be defined as < 0.06 ng/mL, < 0.05 ng/mL, or even < 0.01 ng/mL, depending on the lab and test sensitivity, with lower values indicating better outcomes after prostate treatment." Read more: https://www.mayocliniclabs.com/api/sitecore/TestCatalog/DownloadTestCatalog

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