Myth #4 – All drug tests are urine tests.
Urine tests are the cheapest and easiest to do in mass amounts, but not all drug tests are created equal. Hair tests are the hardest to beat (although that soon may be changing thanks to some German scientists), as they can go back 90 days and are impossible to cheat, short of shaving your head. Of course, if you’re applying for a job that cares enough to have a hair test, you probably knew it was coming. Saliva tests are for the lucky, as they only go back three days.