All 18 fighters who competed at this month's World Series of Fighting 3 card tested clean for performance-enhancing drugs and recreational drugs/drugs of abuse.
Former bantamweight champion Brian Bowles tested positive for elevated testosterone levels following his UFC 160 loss to George Roop on May 25.
All drug tests conducted at UFC on FX 8 came back clean according UFC officials, who announced the results on Thursday.
The Ultimate Fighting Championship released a statement on Thursday regarding the UFC on FX 8 drug tests results. All fighters returned clean results.
All fighters who underwent drug testing earlier this month at UFC on FX 8 passed their tests, the UFC and Brazilian MMA Athletic Commission confirmed.
Pat Healy announced Tuesday in an official statement through his management that he tested positive for marijuana at UFC 159.
All six drug tests conducted at UFC on Fox 7 came back clean.
Six fighters from this month's UFC on FOX 7 event tested clean for performance-enhancing drugs and recreational drugs/drugs of abuse.
All 24 fighters who competed at this month's The Ultimate Fighter 17 Finale tested clean for performance-enhancing drugs and recreational drugs/drugs of abuse.
La Régie des alcools des courses et des jeux (RACJ) on Thursday released to MMAWeekly.com the results of its doping controls for UFC 158: St-Pierre vs. Diaz.
Although he cast doubt on his ability to pass a drug test prior to the biggest fight of his life, Nick Diaz is in the clear following UFC 158.
Following Wednesday's news that both fighters failed drug tests earlier this month at UFC on FUEL TV 8 in Japan, both Riki Fukuda and Alex Caceres have released statements.
The Ultimate Fighting Championship on Wednesday confirmed that Alex Caceres and Riki Fukuda both failed their post-fight drug tests at UFC on Fuel TV 8.
Ultimate Fighting Championship middleweight Riki Fukuda has been released from his UFC contract in the wake of a failed drug test at UFC on Fuel TV 8.
The UFC has released middleweight Riki Fukuda and suspended bantamweight Alex Caceres after both fighters failed drug tests earlier this month at UFC on FUEL TV 8.