I may find out quickly about this...I'm a D.O.T. driver that gets randomly tested. Sometimes it may be 3 months between, or it could be every week. It sucks, but I don't really have anything to worry about-except my "love" for ephedrine.
I ended up getting called last week for a random test, and it didn't occur to me till after the test that I had a Redline Extreme the day before.
I'm not worried about it at all, however, you never know what the hell could happen. Should I be called in with a failed test result, I would simply explain what happened.
CJ- why do you need to know how long it's in and out of your system?