All 13 fighters who underwent drug testing at this past weekend's UFC 109 event tested clean for performance-enhancing drugs and recreational/drugs of abuse.
Nevada State Athletic Commission Executive Director Keith Kizer today e-mailed the drug-testing results to MMAjunkie.com.
UFC 109 took place Feb. 6 at the Mandalay Bay Events in Las Vegas. Randy Couture topped Mark Coleman via second-round submission in the night's pay-per-view headliner.
The NSAC tested both of them, as well as co-headliners Nate Marquardt and Chael Sonnen, and Paulo Thiago, Demian Maia, Matt Serra, Mac Danzig, Phil Davis, Chris Tuchscherer, Joey Beltran, Melvin Guillard and Rob Emerson.
All tested negative for drugs of abuse (such as marijuana and cocaine), as well as anabolic steroids and other performance-enhancers.
The NSAC traditionally tests both main-card fighters, all winning fighters and any competitors who previously failed drug tests. However, some of the testing remains random, and all fighters are subject to it.
Source: http://mmajunkie.com/news/17908/ufc-109 ... -clean.mma