how the fuq

.. i was the last into the classroom and saw my director of my program waiting in the hallway.. i should have known something was up but i paid it no mind. She walks into the class closes the door and says "youre all getting a drug test today, if you leave the classroom before you submit your sample you're automatically dropped" ... now, im not too worried but the test is going to Quest Diagnostics.. I havent smoked in about 60 days and i dont plan on smoking anymore ever since i passed that one test after smoking heavily for 2 days. I'm pretty sure the one i passed was only a glorified home kit.. but since this one is being sent to the lab i'm kinda sketched on what kinda values they look for and what kinda values i may have in my system as far as metabolites are concerned. I believe it was the standard test where they scree for the 5 major drugs. The only reason why i'm worried is that it was my FIRST void of the day and my urine was very dark. about me: 5'8, 145lbs, very lazy the past 2 months, and was a very heavy smoker (4 blunts a day).. thoughts?