LAS VEGAS - Floyd Mayweather's recent demands for random blood testing before fights has opened a huge can of worms.

When Mayweather and Shane Mosley agreed to random blood testing, the Nevada state athletic Commission, as well as the entire boxing world, was eager to see the plan in action.

Blood testing is not required by the Nevada State Athletic Commission, which uses only urine samples. But Keith Kizer, the executive director of Nevada's athletic commission, told Newsday in March month that the commission would welcome the results.

"If they are taking blood tests, I would want to see copies of those tests, along with their MRIs and HIV tests," Kizer said.

So far, the two have taken 21 tests (urine and blood combined), according to Kizer. Mosley has taken 11 and Mayweather 10.

Kizer stopped short of saying the commission was in serious talks about implementing mandatory blood tests, but said it would continue to monitor the situation and make appropriate inquiries.

"Both fighters have passed every test and that's a good thing," Kizer said. "We're going to continue to do our research. Depending on how this goes, you never know what will happen in the future."

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