I thought I would look up some pharmacokinetics data on EPO. It usu takes anywhere from 2-6 wks to have maximal effect. The half-life is 3-10hrs in humans and probably less in horses that are training. Thus, to dectect this drug is impossible. Now you can detect antibodies to this medicine but EPO CONTAINS THE IDENTICAL AMINO ACID SEQUENCE OF ISOLATED NATURAL EPO. Thus, even if you detect antibodies, how can you prove that they did not form against natural epo. Also, antibodies usu. last a long time(some forever, that why vaccines work)so how can you prove that this trainer gave his horse EPO. You are going to have to adjust your handicapping for this drug, just realize that it won't turn horses in Cigar overnight(or was Cigar on EPO, just kidding). The best way to track EPO is to track the distribution since you need a prescription but people using this drug have probably figured a way to get it in the black market.