According to documents available on their own web site, the US Anti-Doping Association (USADA) performed 8,051 doping control tests (what you and I call urinalysis). If you page down far enough, you'll find that there were 41 failures. These include three "non-analytical positives". This term is the circumstancial evidence of the drug testing world, as detailed here by Dave Kindred. Three other failures were refusals and one was a simple no-show.

If this is the gold standard they want to put onto baseball and other sports in the so-called "Unified Drug Policy", I'll say no thank you. You do the math and tell me which policy is more effective.