UFC 158 Drug Tests Come Back Clean, but Not Without Some Controversy

La Régie des alcools des courses et des jeux (RACJ), the athletic commission in Quebec, on Thursday released to MMAWeekly.com the results of its doping controls for UFC 158: St-Pierre vs. Diaz.

The RACJ confirmed that six fighters were tested and all six drug tests returned negative results, but the results aren’t without their own form of controversy.

Unlike most North American athletic commissions, the RACJ would not release the names of the fighters that were tested, noting that, “analyzed substances are information of a confidential nature.” Doing so detracts from the transparency of the results.

It is standard practice that athletic commissions test both main event fighters at mixed martial arts events, so it wouldn’t be a stretch to think both Georges St-Pierre and Nick Diaz were tested, but the RACJ would not confirm that.

Aside from being the emain event, whether or not St-Pierre and Diaz were drug tested is of particular note for two reasons. One, this bout was Diaz’s first since returning from his second suspension for testing positive for marijuana metabolites. Two, Diaz said in a radio interview prior to the fight that he believed St-Pierre was on “plenty of steroids,” although the UFC champion has never tested positive in any doping control and adamantly denies ever using steroids.

UFC 158: St-Pierre vs. Diaz took place on March 16 at the Bell Centre in Montreal. St-Pierre dominated Diaz, scoring a five-round unanimous decision from the judges.