Arno Kroner, DAOM, LAc, is a board-certified acupuncturist, herbalist, and integrative medicine doctor practicing in Santa Monica, California.
When a drug test is performed, the active chemical in marijuana that gets detected in a positive screening is THC. However, most people are under the impression that CBD oil is THC-free.
Does CBD Oil Contain THC?
CBD oil extracted from hemp is not supposed to have any more than .3 percent of THC. However, it’s not uncommon for sellers to mislabel their products as THC-free hemp when in reality, it’s a low-quality oil extracted from marijuana, which does contain THC.
The conclusion is that it’s still theoretically possible for traces of THC metabolites to be present in the stomach acid in the instance where “less-purified CBD productions” are ingested.
In fact, one study discovered that almost 70 percent of the CBD products sold online were not labeled properly, “causing potential serious harm to its consumers.” The reason for this widespread mislabeling is that CBD products are not strictly regulated by the FDA.
CBD products can still be problematic, however, when it comes to drug testing. Though drug tests screen for THC, not CBD, many CBD products contain a trace amount of THC which will be detected in your bloodstream during a drug test.
If you are concerned that THC in your CBD oil or other CBD product may show up on a drug test, you may be able to reduce the chance of that occurring, though there is no guarantee. Some of the factors that may increase the likelihood of a failed drug test are:
Factors in CBD Oil Showing on Drug Screen
CBD has taken off as a natural remedy for a variety of ailments. CBD products like CBD oil can be made from either the hemp plant or the cannabis plant, which are closely related varieties of the same cannabis species, Cannabis sativa. CBD products contain a cannabinoid—a chemical—called cannabidiol, which does not make you high. The substance in marijuana that causes a buzz is a different cannabinoid, called THC, or tetrahydrocannabinol.
The legality of CBD products can be confusing. CBD products made from certain cannabis plant varieties are legal only in states where marijuana is legal, due to the potential THC content. CBD products made from hemp variety plants are legal throughout the United States as long as they contain less than 0.3% of THC and do not make any medical claims. (A hemp plant is defined as Cannabis sativa that contains less than 0.3% THC.)
THC can be detected in a urine test for up to 15 days, depending on how often and how much you use. It leaves the bloodstream in about five hours, but substances your body makes from THC (THC metabolites) can show up for as long as 7 days. CBD tends to stay in the bloodstream from 2 to 5 days, depending on dosage and frequency. If you have been using CBD for a while, it can stay in your body for up to 30 days or more.
“There is a need to understand whether the use of CBD products (. ) can impact drug testing for cannabis given their growing availability and increased interest in CBD for therapeutic purposes.”
“The cannabis used in this study was very similar in THC composition to what is found in legal CBD/hemp products,” Spindle continued. “Individuals who are subject to urine drug testing in their place of employment or elsewhere should understand that even very small amounts of THC in a CBD/hemp product can trigger a positive result for cannabis and that conventional drug tests cannot distinguish whether THC present in someone’s system came from cannabis, or a federally-legal hemp product.
How We Drug-Test For Cannabis
During a recent conversation, postdoctoral fellow Tory Spindle, Ph.D., a researcher in the Behavioral Pharmacology Research Unit at the Johns Hopkins Bayview Medical Center, explained how we drug-test for cannabis.
“These results are especially important for people who use hemp/CBD products daily, such as for therapeutic reasons, because THC can potentially build up in a person’s system with repeated use, which could further increase the chances of a positive result for cannabis.”
Vandrey and his collaborators at the University of Pennsylvania had published a JAMA study showing that that 21% of CBD/hemp products sold on the Internet contained THC, even though their labels didn’t properly disclose it.