In spite of what your previous paper work says. No one has a total 0 psa. I will not even explain that. I will say its an medical urban myth and leave it at that.
Please don't expect us to accept your characterization of documented results as "medical urban myth." On what authority do you make this statement? Please provide reference to published studies.
I can document from more than 4 years of tests -- at least 15 of them that there are indeed people who have PSA measurements of 0.00. As you can see from results of others also reported on this forum there are assays that go to even three decimal places. I would guess that there is a much lesser likelihood of people scoring 0.000 than 0.00, but I can't say for sure because the tests I have have had for more than 12 years don't claim to be accurate two more than two decimals -- and I and my doctors want to see subsequent confirmatory tests before trusting PSA reports of .02 or lower. From personal experience I well know the trail of progression from hundredths to tenths. Been there done that a dozen years ago and am fully expecting to do it again over the next (solve for x) years.