In 2018, the Farm Bill separated hemp from marijuana under the law, making CBD products with less than 0.3% THC legal. But if you’re a safety-sensitive employee under the Department of Transportation (DOT), using CBD isn’t as straightforward as one might think.
Understanding the Risks: CBD and THC
CBD (cannabidiol) doesn’t cause a “high,” and DOT drug tests do not directly screen for CBD. However, even trace THC in a CBD product, often present without accurate labeling,can trigger a positive drug test for marijuana under DOT standards.
According to the DOT’s official CBD notice, CBD use is not accepted as a valid explanation for a positive THC result. DOT drug tests are strict, and a failed test can remove an employee from safety-sensitive duties immediately.
Can CDL Drivers Smoke or Use CBD?
Technically, yes—but it’s not recommended. Even a small amount of THC from a mislabeled CBD product can result in a positive test and serious career consequences.
Whether it’s oil, gummies, or capsules, CBD is a gamble for anyone in a DOT-covered role, including:
- Commercial drivers
- Pilots and flight crew
- Train and transit operators
- Pipeline workers
- Emergency responders
Use of these products could still result in a failed drug test for CBD-related THC exposure, with no path to dispute.
What Happens If an Employee Tests Positive?
When an employee tests positive for THC, even if they claim they only used CBD:
- They must be immediately removed from DOT-covered duties
- The employer must follow the return-to-duty process as outlined by DOT
- A Substance Abuse Professional (SAP) must be involved before the employee can return
For guidance on this process, visit our return-to-duty resource.
Employer Best Practices: How to Stay Compliant
As a DER, safety manager, or HR leader, you can reduce risk by taking clear action:
- Update your drug policy to prohibit CBD use for DOT-covered employees
- Educate your team about the risks of mislabeled products
- Use a trusted testing partner to ensure clear documentation and proper follow-through
- Consider mobile testing to reduce downtime and improve compliance
For a deeper dive into federal testing rules, read ourDOT guidance for drug screening.
Why Procom?
Procom provides federally compliant, on-demand testing to employers across Colorado—delivering results with speed, clarity, and care.
With our support, you get:
- DOT and non-DOT drug testing
- Certified collectors with full chain-of-custody protocols
- Mobile testing across Colorado job sites
- Support through every step of the testing and return-to-duty process
Our team knows how to protect safety-sensitive environments, especially when CBD-related confusion puts compliance on the line.
Trusted Resources for Employers
FAQs: CBD and DOT Drug Testing
Will CBD show up on a DOT drug test?
No, but THC from CBD products often does. DOT tests for THC metabolites, not CBD itself.
What if the employee only used CBD, not marijuana?
DOT does not accept CBD use as an excuse for a THC-positive result. The return-to-duty process must still be followed.
Can CDL drivers smoke or take CBD gummies?
They can, but it’s risky. Even “THC-free” products may result in a failed drug test for CBD-related contamination.
What should we include in our workplace policy?
Prohibit CBD use for all DOT-regulated roles. Provide education and refer to the DOT’s official stance on CBD. Please contact us for more information.
How can Procom help manage CBD-related risk?
We provide onsite and mobile testing, policy guidance, supervisor training, and clear documentation every step of the way.
Protect Your Workforce with PROCOM
CBD isn’t always safe for DOT-covered roles. Stay ahead of the risk, trust Procom to keep your workforce compliant and your operations protected. Get in touch today.
