Hi, I'm looking to donate plasma and also get a little extra cash for gas money for a trip I'm taking this weekend. My question is will I be drug tested? and if I am is it urine or blood? and do they even care if I'm positive for weed? The last time I smoked was a couple of days ago, and before that it was about a week. I'm a pretty frequent user, but other than that I'm healthy as a horse. There's nothing wrong with my plasma so why wouldn't they take it? I'm really curious about this and any and all feedback are greatly appreciated.