Abel Sanchez, trainer for IBF, IBO, WBA, WBC middleweight champion Gennady Golovkin, is hoping that the Nevada State Athletic Commission does not sweep Canelo Alvarez's positive drug test under the rug.

It was revealed earlier this week that Canelo had tested positive for traces of clenbuterol - which the boxer's camp has blamed on eating contaminated meat from Mexico.

Several Mexican fighters in the last few years have been popped for clenbuterol and all of them have used 'food contamination' as the explanation.

Canelo and Golovkin are scheduled to fight each other in a rematch on May 5th at the T-Mobile Arena in Las Vegas.

Their first contest, which also took place at T-Mobile, ended in a controversial twelve round split draw.

According to Bob Bennett, the executive director of the Nevada State Athletic Commission, his organization is investigating Canelo's positive test - but Sanchez is worried that it won't be a thorough investigation

“My biggest concern is that it doesn’t get brushed under the rug and that it’s investigated and that the experts, of which I’m not one, look into it as thoroughly as they would if it were Golovkin who tested positive,” Sanchez said to Yahoo Sports.

“It just seems there are certain commissions in this game that are very lenient toward certain fighters, Texas being one of them, Nevada being the other. Certain fighters get relaxed rules, I guess you could say, and everyone else has to follow certain rules.

“This time, this is a big enough event that the commission needs to seriously investigate all that has happened in the past. I know he’s never tested positive before this, but this stuff [Clenbuterol], it’s not something you start using because of a whim. People who are cheaters, if he is, and I’m not saying it’s not the beef, because it could be the meat, but let’s make this investigation go deep, because you just don’t start all of a sudden using that.”