Peter Attia· MD
so we begin to use the kind of free PSAs and the free PSA ratios and all those things when PSAs have crossed over certain threshold right because yeah typically a lab if you if your PSA is one uh we can't even get a lab to check a free PSA that's right because we know if your P if you're screening someone and your PSA is one then the chances you the probability of a prostate cancer that's lethal is incredibly low right