@retireditguy
Hay not a problem. As I mentioned the numbers get confusing and seems different labs have and give different numbers. I do not have expereince with labs that give numbers below the .1
I am not sure why some do and some don't. Guess it depends on the type machines and labs used.

What I read and understand that what a urologist and R/O are saying are goal numbers are very different for a person who had RP and a person who still has a prostate. Those numbers will be drastically different goals. With a person wiht a prostate getting a PSA level and a person with RP getting an undetectable level. Again I have no experience with RP, hormone treatments, side affects, PSA numbers, etc.

My R/O a UFHPTI set my goal at below one (1.0). Some get confused but I have a prostate so a number below one is my goal. I and others with a prostate are probably not going to get a non dectable PSA ever.

Those who have had their prosates removed have a totall different goal number than those with a prostate. And from reading post here that number to say is non detectable is not something I can say I know to comment on.

Then we get labs with abilities to give lower numbers or that is their program. Mine at Mayo Jacksonville PCP stated their lab does not list numbers below .1 I am not going to a period and the end of that sentence as can confuse readers of the number being given is .1 not something with a period at other end.

I see other labs give numbers below that .1 and I think that is very good information. But a undectable number (however a lab denotes that) would be goal for those with RP. A number like I was given which was below 1.0 Again watching perios is a good goal I am told for a person with still having thier prostate.

Before I had any problems with prostate (incresed urnination, etc.) my PSA was .75 Again watching period. PSA below 4.0 are considered normal but does not mean you don't have cancer. My PSA rose year after year since 2017 rising from the .75 to 3.75 over a 6 year period.

My PCP was and is a person who researches prostate cancer, treatments, and diagnosis and did not like the rising numbers and thus referral to urologists.