Keith Kizer of the NSAC told ABS-CBN News on Saturday that Pacquiao has tested negative for performance-enhancing drugs (PEDs), including steroids.
Kizer said Pacquiao's counterpart, American Floyd Mayweather Jr., has also tested negative for drugs.
Pacquiao's laboratory tests were done in his hometown in General Santos, but were sent to Malaysia while Mayweather Jr.'s testing was done in Las Vegas and sent to Arizona.
The results came out 9 days after talks for the Pacquiao-Mayweather fight collapsed after both camps failed to resolve their differences over random drug testing.
Pacquiao, the only 7-division world champion, is now slated to fight Ghanaian Joshua Clottey at the NFL Cowboys Stadium in Arlington, Texas on March 13.
Reports, meanwhile, said that Mayweather Jr. will also have a fight on the same date. However, the reports said the Golden Boy Promotions has yet to find an opponent for the American fighter, who has not lost a fight.
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