Broad-spectrum CBD left detectable prohibited cannabinoids in urine
After sustained use of the tested product, urine samples contained cannabinoids the authors identified as prohibited in sport. Concentrations rose after exercise.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
People using the tested broad-spectrum CBD supplement had detectable urinary CBG and CBDV after supplementation, with higher concentrations after exercise. THC and its metabolites were not detected at any sampled time. This study concerns cannabinoid detection and potential anti-doping exposure; it does not establish benefits for athletic recovery, sleep, or performance.
The study tested a particular product in healthy people, and the abstract does not report whether detections crossed anti-doping decision thresholds. Detection alone should not be presented as a confirmed rule violation.
What researchers found
Urine samples with detectable CBG
Before versus after the exercise bout following 10 weeks of supplementation; percentages describe samples, not anti-doping violations.
What the abstract examined
Participants used either the CBD product or a matching placebo, then completed exercise after fasting. Urine and blood sampling allowed comparisons with baseline and with samples collected before and after exercise.
Detection and its meaning
No cannabinoids or their metabolites were detected at baseline. The later findings show why the cannabinoid profile of the tested product matters, even though THC was absent from the collected samples.
The original publication
Daily Use of a Broad-Spectrum Cannabidiol Supplement Produces Detectable Concentrations of Cannabinoids in Urine Prohibited by the World Anti-Doping Agency: An Effect Amplified by Exercise.
Gillham SH, Cole PL, Owens DJ et al.
Med Sci Sports Exerc · 2026
- PubMed ID
- 40920736
- Record checked
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