Pac-Mayweather: The Real Facts

Ok with all th arguing going back and forth with Pc's camp and Mayweather's camp on drug testing and when the tests are to be done, here's are my my questions:

1. Did these guys have a signed contract covering all this?

2. If they didn't then where are we in negotiations (prior to the squabble)?

3. How accurate are the tests?

4. Can you test a fighter a day after the fight and still detect whatever it is that Mayweather is concerned about?

5. Where did the Mayweather's information come from with their accusations?

Okay I am asking anyon who can pull up news articles, et ctera on this to post the answers here. Thanks