Full-Spectrum CBD May Trigger Positive THC Result Use of so-called “full-spectrum” formulations of cannabidiol (CBD) products can cause users to test positive for THC, the component of marijuana Can you use CBD oil and still pass a drug test? Learn how CBD shows up on a drug test and if the cannabinoid will earn you a pass or fail. Find out if you can fail a drug test dues to hemp oil or CBD (cannabidiol) supplements. Plus info on how much THC is in hemp oil and CBD products. ConsumerLab.com's answer explains.
Full-Spectrum CBD May Trigger Positive THC Result
Use of so-called “full-spectrum” formulations of cannabidiol (CBD) products can cause users to test positive for THC, the component of marijuana that causes euphoria, according to an open-label study published in JAMA Psychiatry.
Full-spectrum CBD products contain THC, but at levels too low (≤0.30% by weight) to meet federal guidelines for Schedule 1 classification. To determine whether use of such a product might cause a positive urine drug test for THC, the authors enrolled 15 individuals being treated for anxiety to receive a full-spectrum, high-CBD extract containing 9.97 mg/mL of CBD (1.04%) and 0.23 mg/mL of Δ9-THC (0.02%), 1 mL sublingually 3 times per day for 4 weeks. Presence of THC was assessed using a presumptive test panel, followed by gas chromatograph-mass spectrometry performed by Quest Diagnostics.
Seven patients tested positive for THC, and 7 tested negative (1 patient dropped out).
“Despite limitations in sample size and diversity, these findings have important public health implications,” the authors concluded. “It is often assumed individuals using hemp-derived products will test negative for THC. Current results indicate this may not be true,” and the results may have “potential for adverse consequences, including loss of employment and legal or treatment ramifications, despite the legality of hemp-derived products.”
Dahlgren MK, Sagar KA, Lambros AM, et al. Urinary tetrahydrocannabinol after 4 weeks of a full-spectrum, high-cannabidiol treatment in an open-label clinical trial. JAMA Psychiatry. ePub ahead of print. November 4, 2020. doi: 10.1001/jamapsychiatry.2020.3567
Plus CBD Oil Failed Drug Test
Article written by
Tina Magrabi Senior Content Writer
Tina Magrabi is a writer and editor specializing in holistic health. She has written hundreds of articles for Weedmaps where she spearheaded the Ailments series on cannabis medicine. In addition, she has written extensively for the women’s health blog, SafeBirthProject, as well as print publications including Destinations Magazine and Vero’s Voice. Tina is a Yale University alumna and certified yoga instructor with a passion for the outdoors.
Determining which CBD products are best for you or someone you care for is difficult because there are so many products out there of varying quality.
Scientific evidence suggests that cannabidiol (CBD) can help improve sleep quality and reduce insomnia. Learn more about the best CBD for sleep.
Learn how CBD oil works as a potential treatment and preventative for leg cramps and muscle pain.
Keep updated with our social media
Phone: +1 (800) 660-9085
©2022 Leafwell. Note: Information on this site does not constitute medical advice or legal advice.
Can hemp oil or CBD (cannabidiol) supplements cause me to fail a marijuana drug test?
Find the best products with instant access to our latest tests & reviews of over 1,300 health products.
Save money by finding high-quality products at lower cost.
Be alerted to new clinical findings & warnings.
See answers from our experts.
Stay informed with our e-newsletter.
It is possible to fail a drug test for marijuana based on THC in a hemp oil, hemp seed, or hemp seed extract — the ingredient in many CBD oils and supplements. Unusually large amounts of hemp oil or hemp seed would normally be required to cause a positive drug test.
However, with hemp extracts, i.e., CBD oils, there is roughly a 10% chance of failing a drug test with low to moderate doses of CBD, and this will be influenced by individual variation in how THC is absorbed and metabolized. As dosage increases, the risk increases: one study found a 50% of testing positive with daily use of a moderately high dose of CBD. Note that some products contain very little THC and are, essentially, THC-free. For details, including the amounts of THC that ConsumerLab.com detected in specific products, see the What CL Found section of the CBD Oils & Hemp Extracts Review.
Join today to unlock all member benefits including full access to all CL Answers and over 1,300 reviews.
Join now at www.consumerlab.com/join/
Submit your comment
This feature is restricted to active members.
Join now to add comments and get all member benefits, including over 1,300 reviews.
Agree to Comment Terms
Please abide by the following:
- If you make a statement of fact, such as whether a type of treatment does or does not work, state your basis — such as personal experience or a published study.
- If you make a positive or negative comment about a product, note whether or not you have a financial interest in the product or in a competing product.
- Please be respectful in your tone.
- Please do not submit any type of HTML markup or scripting as it will not be accepted, nor will posts that exceed 2,500 characters.
For your privacy, only your first name (from your account) followed by a random number will appear with your comment. Your last name and email address will not be displayed.
Your comment has been submitted
We will review your comment before it is posted.
Related CL Answers (8)
Does CBD help fight colds or the flu?
Find out if CBD (cannabidiol) can help to fight colds or the flu. ConsumerLab.com’s answer explains.
Does CBD help with Parkinson’s disease?
Find out if CBD (cannabidiol) oil can help reduce symptoms of Parkinson’s disease, including motor symptoms such as tremor, and non-motor symptoms such as mood and sleep disturbances. ConsumerLab.com’s answer explains.
Does CBD interact with other medications?
Find out which drugs and medications can interact with CBD oil. CBD (cannabidiol) is metabolized by cytochrome p450 enzymes CYP3A4 and CYP2C19, and therefore, may affect the metabolism of drugs that are also metabolized by these enzymes. ConsumerLab.com’s answer explains.
Is it legal to take cannabidiol oil (CBD) on a flight?
Find out if it is legal to bring CBD (cannabidiol) oil when flying. ConsumerLab.com’s answer explains.
Can CBD cause a drop in blood pressure?
Find out if CBD (cannabidiol) can lower blood pressure or affect heart rate, plus information about other CBD side effects, drug interactions and safety concerns. ConsumerLab.com’s answer explains.
Can CBD help with insomnia or improve sleep?
Find out if CBD (cannabidiol) can help for insomnia or improve sleep in people with anxiety, sleep disorders, and Parkinson’s disease. ConsumerLab.com’s answer explains.
Are there any supplements I should avoid when taking acetaminophen (Tylenol)?
Find out if there are any supplements that should be avoided when taking acetaminophen (Tylenol).
Is CBD oil (cannabidiol) effective and safe? Is it legal?
Learn more about cannabidiol (CBD), its potential effects, safety and side effects, and find out if CBD oils and pill are legal. ConsumerLab.com’s answer explains.