The THC level in topical products tends to be far lower than that in smokable or edible products. Add that to the fact that applying a topical to the skin only allows it to break the skin/muscular barrier, but not enter into the blood stream. I have not seen any reported cases of positive drug tests from topical applications and the research supports this.
Note: Since we have gotten a lot of questions about marijuana use and drug testing in general, below is an overview of the different types of drug tests and their relationship to marijuana use.
Whether you support the idea of drug testing or not, the consequences of having a positive test can be far reaching and detrimental.
Urine tests can detect the THC in the fat cells, since some of it gets washed out with the urine. THC can reside in fat cells for up to 4 weeks, sometimes longer if the person consumes large amounts of marijuana.
In theory, the same reason you can’t get high from rubbing them on your skin related is to why using topicals will not cause you to test positive in a drug test.
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.
Topical products that claim to contain CBD—like shampoos, cosmetics or creams—should not cause any reaction during a drug test because they do not enter the bloodstream. In the case of CBD oils, gummies, teas or transdermal patches, the situation is more complicated. In a test of 84 CBD products obtained online, 18 contained THC.
Factors in CBD Oil Showing on Drug Screen
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:
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.
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.