Will CBD Oil Make You Fail a Drug Test?

FMCSA Clearinghouse

The growing popularity of CBD oil has sparked questions about its implications for drug tests. Cannabidiol (CBD), known for its potential therapeutic benefits, is commonly used for anxiety, pain, and other conditions. But does using CBD oil put you at risk of failing a drug test? To answer, we need to explore what CBD is, its THC content, and its potential impact on drug test results, particularly for Department of Transportation (DOT) screenings.

What Is CBD?

CBD, short for cannabidiol, is a compound found in cannabis plants. There are two primary types of cannabis plants:

  1. Hemp – This variety contains low levels of tetrahydrocannabinol (THC), generally less than 0.3%.
  2. Marijuana – This type contains much higher levels of THC, sometimes exceeding 30%.

CBD is extracted from both plant types and used widely in oils, edibles, topicals, and other products. Unlike THC, CBD is non-psychoactive, meaning it doesn’t produce the “high” associated with marijuana. CBD has gained widespread attention for its potential to alleviate conditions such as chronic pain, anxiety, inflammation, and more.

Though CBD is widely available and does not require a prescription in many states, it is largely unregulated, which may lead to inconsistencies in product content and quality.

Does CBD Oil Contain THC?

One of the most important considerations when using CBD products is whether they contain THC, the psychoactive compound in cannabis that creates a high and is commonly tested for in drug screenings. Here are the key facts:

  • Hemp-Derived CBD: Typically contains less than 0.3% THC, as mandated by the Agriculture Improvement Act of 2018 (Farm Bill).
  • Marijuana-Derived CBD: Generally has much higher concentrations of THC and is not legally permitted at the federal level, though this varies by state.

However, CBD products are not strictly regulated by the FDA. Studies have shown that many products marketed as “THC-free” actually contain trace amounts of THC. This inconsistency can lead to unintended THC consumption, potentially resulting in a failed drug test.

Will CBD Oil Make You Fail a DOT Drug Test?

DOT drug tests are specifically designed to detect substances that affect safety-sensitive job performance, including marijuana. According to the Federal Motor Carrier Safety Administration (FMCSA), the key points about CBD and DOT drug tests are:

  • CBD products with more than 0.3% THC are classified as marijuana and are illegal under federal law.
  • DOT tests screen for THC, not CBD. However, if the CBD product contains even trace amounts of THC, it could result in a positive test.
  • Labels on CBD products may not accurately reflect their THC content. FDA studies have found that some CBD products exceed legal THC levels.

For safety-sensitive employees, the DOT advises extreme caution with CBD usage. Even “low-THC” or “THC-free” products can lead to an unexpected positive test.

The Detection Mechanism

DOT drug tests use urine samples to identify the presence of specific substances, including THC metabolites. These tests do not differentiate between THC derived from marijuana or trace THC levels from CBD products. This means that using CBD, even unknowingly, could result in a failed drug test.

Will CBD Oil Make You Fail a Drug Test?

What to Do If You’ve Failed a DOT Drug Test

Failing a DOT drug test can have serious consequences, particularly for individuals in safety-sensitive roles like commercial drivers, pilots, and railway workers. Here’s what to do if it happens:

  1. Understand the Return-to-Duty Process: According to DOT regulations, employees who fail a drug test must complete a Return-to-Duty process. This involves:
    • Initial evaluation by a DOT-qualified Substance Abuse Professional (SAP).
    • Completion of prescribed education and/or treatment.
    • A follow-up evaluation by the SAP.
    • Passing a Return-to-Duty drug test before resuming safety-sensitive duties.

For a detailed overview of this process, visit the FMCSA guidelines.

  • Reach Out to a SAP: Working with a certified SAP is crucial to guide you through the process. Organizations like SAP Evaluation LLC can connect you with professionals nationwide.
  • Challenge the Results if Necessary: If you believe the result is a false positive, you can request testing of the split sample collected during the initial test. However, this may incur additional costs and is unlikely to change the result if THC is present.
  • Be Cautious Moving Forward: Always verify the contents of any CBD products you use. Opt for products that provide batch-level lab testing to confirm they are truly THC-free.

Final Thoughts

While CBD oil itself is unlikely to cause a positive result on a drug test, the risk lies in the potential for THC contamination. The lack of strict regulation in the CBD marketplace means you may inadvertently consume more THC than expected, putting you at risk of failing a drug test, particularly a DOT-required screening.

To minimize this risk, choose products from reputable brands that offer third-party lab certifications and clearly labelled THC levels. If you are in a safety-sensitive role and unsure about CBD usage, it may be best to avoid these products altogether.

Always stay informed and exercise caution when considering CBD, especially if passing a drug test is vital to your career.