@retiredguy
Good information. I found the reading of numbers confusing coming from so many posters. I have learned that different labs, different machines, different distinct levels of testing and thus vastly different numbers are possible and used by labs.

For me I go to Mayo Jacksonville. My PCP in discussion on my last PSA test of .22 stated to me that Mayo Jacksonville lab does not give numbers below .1. Not .01.
He said below .1 that our lab considers that non detectable.

I see many posters posting much lower numbers of PSA than .1 that indicates many labs have different levels of tests and abilities when posting PSA numbers. I would have thought Mayo Jacksonville would have a more sensitive machine and testing. Maybe they do have a special machine when requested by doctors but have no information on this.

My R/O at UFHPTI said goal for me was a PSA below One (1.0) not .1
I have reached that already with my .22. But I did not have prostate removal or any hormone treatments. When I read others very low PSA numbers, I do not question them as obviously their labs are using different machines and /or sensitivity numbers than mine.

A prostate cancer patient's urologist, surgeon, R/O would have specific goal numbers depending on if they had surgery, hormone treatments, type, and duration of radiation treatments, etc.

For me decades ago my PSA was .75. It was that level for many many years and then in 2018 started rising. Both my PCP and I thought it was from extensive bike riding as I did Sprint Triathlons. So, we stopped riding the bike over and over prior to testing but kept rising.