[alnorth]

Diaz tested at 300 ng/mL, which is double the NV limit of 150 ng/mL

I had no idea what those numbers really mean, but after some research, it looks like the 150 standard that WADA and Nevada use is very reasonable if (as they have stated) they don't really care about long-term MJ use and only want to keep the fighters from using shortly before the fight. Extremely heavy users might have to quit a couple months to get under that level, and occasional recreational users should have no problem getting under 150 with just taking a week or so off.

So, by testing at 300, Nick Diaz either smokes like a chimney and couldn't get under 150 despite an attempt to do so, or he doesn't give a damn about failing and was planning to be suspended all along.

By comparison, the 15 ng/mL standard that Texas uses (which Jessica Eye was busted for) is ridiculously low unless what you really want is to make sure fighters never smoke at all. 15 is what employers often use.