Workplace drug testing has long included marijuana as one of the main substances of interest, specifically testing for THC, the psychoactive compound in marijuana. In years past, marijuana was only available “illegally”, but, over the last 25 years, some states have legalized, decriminalized, or allowed for medical use of marijuana. The popularity of another cannabis plant-derived substance, cannabidiol (a.k.a. CBD) has also exploded. Unfortunately, CBD is poorly regulated and the Food and Drug Administration (FDA) does not certify THC levels in any product, including CBD goods. Makers of CBD products may inaccurately represent, poorly monitor, or omit information on THC content. In any event, drug testing for marijuana is directed solely toward detecting THC, and any amount over the predetermined cutoff level will be considered a positive result in virtually all circumstances. CBD products are not currently considered a legitimate medical explanation for a laboratory-confirmed marijuana result. Employees are cautioned in their decision to use CBD products if they are subjected to any workplace drug testing.