Pacquiao agreed to have it done 24 days before the fight, but
Mayweather insisted on 14. The other day, however, the Filipino
superstar agreed to do it 14 days or even closer, but not on the day of
the fight itself.

…

"I gave him (Pacquiao) a chance, up to 14 days out. But my new terms
are all the way up to the fight. They can come get us whenever, all the
way up to the fight, random drug test. That’s what it is," Mayweather
was quoted as saying.

Now, unless Mayweather changes his mind, the fight is not likely to
happen because Pacquiao said a couple of days ago that he’s willing to
undergo blood tests as long as they’re not done so close to the fight.

"Huwag lang sa day ng fight (Just not on the day of the fight),"
Pacquiao said.

…

When Mayweather fought Shane Mosley last May 1, the last ounce of
blood (testing) from both fighters were drawn 18 and 19 days before the
fight.