I can't imagine a drug testing place being any smoother than this. It's all hair drug testing as someone mentioned, so don't chug a lot of water beforehand like I did.
I literally walked in, lady came out of the back, brought me in and cut a piece of my hair, I initialed a few things, and I walked out. Had to be like 2 minutes.
My girlfriend had to take one at another drug testing place that did urine, and hers probably took like 10 minutes overall. As far as I'm concerned, if I had a choice for time saving, Psychemedics would be it!