Jake Shields announced last week that he had failed his post-fight drug test following a win over Ed Herman at UFC 150: Henderson vs. Edgar II. The Colorado Department of Regulatory Agencies' Boxing Commission confirmed with MMAjunkie.com on Monday that Shields' victory has been changed to a no-contest.

Also, Shields will be suspended for six months, as he reported himself. The substance which caused the failed test has yet to be announced.

Shields (27-6-1) earned a decision victory over Herman in his first middleweight contest in the UFC. He entered the promotion as a welterweight, losing to Georges St-Pierre in his quest to become a champion.

"We've been informed by the Colorado Department of Regulatory Agencies' Boxing Commission that Mr. Shields tested positive for a banned substance following his bout at UFC 150," said a statement released by the UFC. "UFC has a strict, consistent policy against the use of any performance-enhancing drugs, including the requirement that all incoming athletes be tested and cleared for PEDs. Therefore, we fully support the drug testing efforts of the Colorado Department of Regulatory Agencies' Boxing Commission and will fully cooperate with the Commission regarding this matter."

Shields was also fined $5,000. He will be eligible to return to action in early 2013.

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