The following variables affect the amount of time that marijuana (THC) and its metabolites remain detectable in the urine or other biological samples:
It is difficult to say how much THC needs to be present to cause a positive drug test because this depends on several drug and patient-specific variables, and also the cutoff value for the test.
An estimate of the length of time marijuana (THC) is detectable in urine is:
Drug tests either test for the parent drug or at least one of its metabolites, or both. Concentrations of drugs in urine are usually higher than in blood and present for longer.
Broad-spectrum CBD is also less likely to be contaminated with THC. This is because all the THC is removed in broad-spectrum CBD as opposed to full-spectrum CBD which contains all of the compounds that naturally occur in the plant they were extracted from. CBD isolate is also pure CBD, and typically comes from hemp so it shouldn’t contain THC.
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.
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 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.
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.
Many individuals have taken CBD as a natural remedy for various ailments. CBD is being promoted for alleviating chronic pain, insomnia, anxiety, and many other ailments. While there is still ongoing research on those uses, there is certain science behind the CBD compound. The FDA, last year, approved a drug that contains CBD known as Epidiolex to treat certain severe, but rare seizures.
A secondhand exposure scenario that is more likely is a positive hair test for marijuana that results from directly contacting marijuana paraphernalia or from someone who has THC on their hands. For example, if somebody who was in contact with marijuana then turned around and touched your hair, you might end up with a false positive drug test, if it was a hair test.
CBD and Drug Tests Overview
An article published in 2020 shows urine drug tests typically focus on the following substances:
When the antibodies do identify a drug, they’ll generate a signal showing the test as “positive.”
Licensed farmers are allowed to grow the plant, but it must contain less than 0.3% of THC. Because of this, more and more CBD products are popping up everywhere from lotions to oils to cookies to coffee.