Tim CredeurA scheduled Ultimate Fighter 7 Finale preliminary bout between TUF 7 semifinalist Tim Credeur and fellow castmember Cale Yarbrough was cancelled after Credeur’s pre-fight drug test administered by the Nevada State Athletic Commission revealed trace amounts of Adderall.

According to UFC.com, Credeur informed the NSAC at the weigh-ins that he had been using the prescription drug but had stopped using it five days ago. A pre-fight drug test completed on Saturday revealed trace amounts of the drug, which is prescribed to treat ADHD and narcolepsy, were still presesent.

“[Adderall] acts as a cardio-vascular restrictor and that’s the main reason it’s banned because it can cause athletes to have a cardiac episode with the stress they’re under when they’re in an athletic competition. Secondly, it can have a performance-enhancing effect as well,” NSAC Executive Director Keith Kizer told UFC.com. “Unfortunately, the drug was still in his system and he’s still positive, so he was unable to get cleared to fight. “It should be out of his system in a few days and hopefully they’ll find another fight for him.”

No disciplinary action, in the form of fines and/or suspension, will be taken by the NSAC because Credeur alerted them of his use of the drug before the bout.

The fight may be rescheduled for July 19th’s UFC Fight Night 14 Spike TV event at the same venue.