Once again, Fighters Only magazine has the scoop:

“[When] there is a failed drug test, the commission at its discretion could overturn a victory or draw and make it a no contest. We have actually done that a few times, that is the most common of the four [grounds for overturning the decision].”

Parisyan will appear in front of the commission next Tuesday to explain why he had threee different opiate sin his system at the time of the UFC 94 fight.
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However, Kizer says that even if the drugs do turn out to have been prescribed, it is unlikely to mitigate the length of ban that Parisyan is likely to be handed.

My greatest fear is that the suspension will do little to Karo except further exacerbate his existing problems. In truth, though, the length of the suspension is hardly the crux of the matter; whether Karo is legitimately committed to changing his life seems far more the salient issue.