Will Cannabidiol (CBD) result in a positive test for marijuana?

CBS is typically used for medical purposes and is one of the components found in cannabis. It is not regulated by the Federal Drug Administration. Pure CBD does not cause positive test results, however, many products which contain CBD may be contaminated by tetrahydrocannabinol (THC)  which could lead to variable results. Another cannabis compound is cannabinol (CBN) and is a THC variant so if this is in the cannabis used, it may also yield a positive test result.

Can employers drug test in states where marijuana is legal?

Legalization of recreational and medical use of marijuana varies from state to state and this is constantly changing. Since marijuana is still a prohibited Schedule I substance at the federal level, employers can enforce a zero-tolerance standard and still prohibit marijuana use, possession, and impairment in the workplace, on job sites, during working hours or when employees are on call in order to ensure a safe work environment. Some states may be building employee and employer protections into their legislation and PlusOne will amend its processes as laws dictate.

How long does it take to get drug test results?

This will depend on the test required, when the collection appointment is set and the results. Most often tests are scheduled by the donor within a few days of the order submission and results are returned within several days from that time. A negative result is normally returned within 48 hours of collection. If there is any need for additional information, or there is a non-negative result, the donor may be contacted by the Medical Review Officer which takes additional time.

Do you offer drug testing?


Yes, we do. Typically, our Customers choose a 9 panel (Cocaine, Marijuana, Amphetamines, Opiates, Phencyclidine, Methadone, Benzodiazepines, Barbiturates, and Propoxyphene) drug screen, but there are other options available. We have a collection site network of almost 15,000 locations to ensure a secure, efficient and professional chain of custody and processing for any collections.