Tim Bradley is enrolled in random drug testing by the Voluntary Anti-Doping Association (VADA) for the third straight fight in advance of his April 12 rematch with Manny Pacquiao, the WBO welterweight titleholder confirmed to RingTV.com on Wednesday.

Bradley (31-0, 12 knockouts) said that his blood and urine was also randomly tested by VADA for his unanimous decision victory over Ruslan Provodnikov last March, as was Provodnikov, as well as for his split-decision over Juan Manuel Marquez in October.

The VADA testing is separate from that which Bradley and Pacquiao will endure under the auspices of the Nevada State Athletic Commission, which was announced by NSAC chairman Francisco Aguilar on Feb. 14.

"I am very happy with the NSAC drug testing and agreed to them handling the testing for my upcoming fight," Bradley said in a text message statement to RingTV.com. "Additionally, I chose to sign up with VADA as I have for the last couple of fights."

Under the NSAC testing, which Marquez participated in as well, Bradley and Pacquiao will endure unannounced tests up to and including the day of their clash, which is a rematch of Bradley's split-decision over Pacquiao in June 2012.

While Bradley is paying for the VADA testing himself, Top Rank CEO Bob Arum is funding the NSAC testing at a cost of $35,000.