Federal drug tests (aka DOT tests) are regulated by the federal government. As with many things run by the government, there are many, many rules that the laboratories, employers, and even the drug test collectors must follow. Some of these rules, as you can imagine, seem pointless. An example of one of the rules that seems pointless but does have a purpose is something the donor must do at the beginning of every DOT drug test. Before the collector gives the donor a cup to pee in, the collector must instruct the donor to wash their hands… That’s right, they have to wash their hands BEFORE the test. This rule is designed to prevent the donor from having a foreign substance on their hands or embedded in their fingernails – a substance they may then use to attempt to adulterate their urine specimen while in the restroom.