Understanding Marijuana and DOT Drug Testing

This blog post talks about marijuana and DOT drug testing.


Marcin Rogalski

6/1/20231 min read

person holding white flower during sunset
person holding white flower during sunset

Marijuana is a widely used substance in the United States, with many states legalizing its use for medical and/or recreational purposes. However, for individuals who work in safety-sensitive positions, such as commercial drivers, marijuana use can have serious consequences, including failing a Department of Transportation (DOT) drug test.

DOT Drug Testing

The DOT requires drug testing for safety-sensitive positions to ensure that employees are not impaired while on the job. The DOT drug test screens for several substances, including marijuana (THC), cocaine, opiates, amphetamines, and phencyclidine (PCP).

The DOT drug test is a urine test that detects the presence of THC in the system. If the test comes back positive, the employee may face disciplinary action, including suspension, termination, or mandatory rehabilitation.

Marijuana and Drug Testing

Marijuana can stay in a person's system for up to 30 days, depending on the frequency and amount of use. This means that even if an individual uses marijuana outside of work hours, they may still fail a drug test if the drug is detected in their system.

It's important to note that the DOT drug test does not measure impairment, only the presence of the drug in the system. This means that an employee may test positive for marijuana use, even if they are not currently under the influence of the drug.

Consequences of Failing a DOT Drug Test

Failing a DOT drug test can have serious consequences for employees in safety-sensitive positions. In addition to disciplinary action from their employer, the employee may also lose their commercial driver's license (CDL) and be barred from working in safety-sensitive positions for a period of time.

Marijuana use can have serious consequences for individuals who work in safety-sensitive positions, including failing a DOT drug test. It's important for employees to understand the risks associated with marijuana use and to make informed decisions about their use of the drug. If you work in a safety-sensitive position, it's crucial to abide by the DOT drug testing regulations to ensure the safety of yourself and others.