Tim Bradley and Manny Pacquiao will undergo random drug testing in advance of their fight on April 12 at the MGM Grand in Las Vegas, Nevada State Athletic Commission Chairman Francisco Aguilar announced Friday.

The fighters will face unannounced tests up to and including the day of their clash, which is a rematch of Bradley's split decision over Pacquiao in June.

Samples will be collected and analyzed by a laboratory that is certified by the World Anti-Doping Agency (WADA).

Top Rank CEO Bob Arum, who promotes both fighters, said the testing is similar to that done for Bradley and Juan Manuel Marquez before Bradley's split-decision victory in October.

"It's complete WADA testing of everything from soup to nuts," said Arum, who will fund the testing at a cost of $35,000. "The results will go to the commission."