If you are in the market for a job, and you are aware that there is a possibility of a pre-employment drug test, maybe you should cut back til you have a job, just sayin. Most companies don't make a secret of drug testing, (Home Depot has a sign on the main entrance doors to their store), old school it was did you show up for the interview in a suit, did you have a pen, did you have your references and previous employers on a piece of paper so you were prepared to fill out the application. New school is are you smart enough to keep clean for a couple weeks so you can pass the pee test.