I know this topic has probably been addressed numerous times...but I'm seeing multiple definitions from various sources.
I had a "sensitive test" from my uro that came in at 0.03 (33 days post RP), then a few weeks later my onc ordered a (non-sensitive) PSA test that came back at 0.1 Having used two different assays - one sensitive and one not I can't draw much of a conclusion...I wasn't too happy having incomparable tests. Like all PC guys I want the lowest number possible. I was disappointed when my sensitive test didn't come back 0.01
My uro said my 0.03 vis-à-vis 0.01 was probably due to my single apical PM (focally). Is the 0.02 difference even above the noise level of the test? I'm not sure the data supports his prognosis but clearly it's possible. I'll get another sensitive test before my rad treatment in a few weeks.
Do test ever come back at 0.00? What's "zero"?
There seems to be definitions used to support clinical decisions and then there are more empirical-based definitions.