Nevada State Athletic Commission (NSAC) has just put Shane Carwin and Roy Nelson on blast.

The two coaches for The Ultimate Fighter (TUF) 16, who are expected to collide for a spot in the 265-pound pecking order at the show's live finale on Dec. 15, 2012 in Las Vegas, Nevada, have been targeted for random drug testing, according to a report by MMA Weekly.

That means by the time you read this, their 24-hour window to comply will likely have closed.

It wasn't that long ago when the commission popped heavyweight striker Alistair Overeem for elevated testosterone, who was administered a random drug test a few weeks ahead of his UFC 146 title fight opposite Junior dos Santos. "Demolition Man" was denied a license to fight and will be sidelined for the remained of this year.

The results for the UFC's TUF guys won't be available for approximately two weeks.

Carwin was linked to a pharmacist busted in 2010 for a nationwide conspiracy to illegally sell anabolic steroids made in Mobile, Alabama; however, "The Engineer" has never failed a drug test since making his Octagon debut at UFC 84 back in 2008.

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