Testing Marquez so close to the fight would basically be useless. If he used any of a variety of substances, it likely would have long since cleared the body and be undetectable at this stage.
As the United States Anti-Doping Agency's lengthy investigation of cyclist Lance Armstrong showed, Armstrong and his teammates used EPO for years without testing positive.
EPO is a hormone which increases the oxygen-carrying ability of the blood. It helps the muscles perform better and over a more lengthy period of time.If injected directly into a vein, EPO will clear one's system in fewer than 24 hours. An athlete who took EPO in the evening would have no fear of testing positive the following day.
According to WADA protocols, athletes have to provide a one-hour window to be available for testing. Since EPO passes the system so quickly, those using it can simply take it after the one-hour window has passed.Dr. Larry Bowers, USADA's chief science officer, said in an affidavit in the Armstrong case that the lack of a positive test is not proof that one did not dope.
Victor Conte, the founder of BALCO, went to prison for his role in that scandal. Since his release, he's acted as an anti-doping advocate, the black hat turned white fighting for clean sport.
"I see in interviews that Memo is trying to say he is an anti-doping advocate like me now, but we are as different as night and day," Conte told Yahoo! Sports. "What happened was, I chose not to cooperate with law enforcement. I chose to accept the full consequences. I didn't testify. I didn't provide any documents or information because these were people that I gave the drugs to. I was the leader as he was the leader.
"So you're going to turn on them, you're going to testify against them, you're going to put them in prison while you walk free when you were at the top of the food chain and you were the leader of the pack? I didn't feel good about doing that. … I saidhttp://ca.sports.yahoo.com/news/boxing- ... 32499.html
JMM using PED is a big possibility