As CBD oil use has begun to increase, questions of whether or not it would trigger a positive result in a drug testing, since it contains low levels of THC, have risen.
Numerous studies have been conducted, including one by CV Sciences (a supplier and manufacturer of agricultural, hemp-derived CBD) and another published in the Journal of Analytical Toxicology.
In the study conducted by CV Sciences, the results showed that a consumer taking a high-quality CBD product (at the serving recommended) would be unlikely to return a positive result for THC. It was, however, pointed out that taking high doses of CBD oil could test positive in a urine test.
The Journal of Analytical Toxicology study tested 15 participants. They were given calculated doses of CBD oil for 40 days (in 4 increments of 10-day periods). They then provided urine samples which were tested using radioimmunoassay. (Note: Radioimmunoassay often results in false positives, which occurred during the trial.)
At a .45 mg THC daily ingestion level and a 50 ng/mL cutoff, there were no positive screenings; however, once increased to .6 mg, there was a positive result. Many law enforcement agencies, treatment programs, and employers use a 15 ng/mL cutoff. At this level, 19% of all the samples resulted in a positive. When these same sample levels were tested via gas chromatography-mass spectrometry (GC-MS), however, there were no positive results. Furthermore, the samples were tested to a level of 5.2 ng/mL.
The end result: Consumption under 200 mg/day and there’s no danger of a positive result from a GC-MS. If you’re concerned about an immunoassay-screening test, keep it below 100 mg.