Illicit drug abuse remains a serious public health issue. According to the 2013 National Survey on Drug Abuse and Health, an estimated 24.6 million Americans age 12 years and older were current illicit drug users—9.4% of the U.S. population. Marijuana was the most commonly abused illicit drug, followed by cocaine, heroin, and hallucinogens.
USA federal guidelines define an adulterated specimen as a urine specimen containing either a substance that is not a normal constituent or an endogenous substance at a concentration that is not a normal physiological concentration. Pre-employment screening programs typically do not involve direct supervision of specimen collection, so employment candidates may attempt to cheat drug testing by adulterating specimens. This makes it essential for laboratories to identify pre-analytically any such adulterated specimens.
How People Try to Beat Drug Testing