For college graduates only, is there a 100% proof that taking OSDT proves anyone that takes it is clean?

Thanks for your trust in my opinion. As I have expressed before, OSDT is just a test to determine if the one being tested has been on PEDs or other illegal drugs. A positive test means that he/she has possibly used it and has therefore cheated. A negative test however, cannot conclusively rule out it's use as it will depend on several factors, like the timing of when it was done, the amount taken, and how fast the body is able to eliminate it from its system. The commission's method is sufficient and a urine test right after the fight will be able to detect any illegal drugs that may have been used.