Although many hemp-based CBD products are currently available in several states where recreational marijuana is not legal, some individuals may worry whether or not their regular use of CBD oil may show up on an official drug test. Even in states in which it’s legal to purchase THC-laden cannabis from a licensed retail outlet, some employers still check potential workers for cannabis usage. “It’s a question of how much you want to risk,” says Christian Pulis, owner of Green Grass Health care products, a private company that sells a line of CBD and other health and wellness products. “The answer varies depending on your place of employment.” But he cautions that the CBD content in products produced by companies like his carries only a small amount of the active ingredient, so even if your doctor believes that your body is impaired by THC, he may not consider CBD as a cause.
When it comes to the types of CBD supplements that actually fail a drug test, those that contain little or no CBD may do so for one simple reason: The testing procedure for most tests relies on the theory that any compound that can be converted into THC is also potentially harmful when taken in lower doses. So any supplement with CBD must be evaluated on this theory. ” CBD is different than THC, “explains Dr. Mark Sisler, a staff physician at The Ohio State University Wexler College of Medicine.” THC can be converted into lung cancer, but CBD isn’t toxic in high doses.” Consequently, tests for CBD don’t focus on its ability to cause intoxication in the lab.
But pure CBD can’t be detected by a drug screening test, either. The only true way to screen for CBD is by performing a blood draw. ” CBD doesn’t interact with anything in blood, so blood tests don’t work,” says Sisler. “We can, however, do a saliva test, which does show us whether CBD is present in a patient’s blood stream.” Unfortunately, saliva tests don’t show levels of CBD in patients’ blood, because only the first few hours after ingestion are measurable. This means that we may never know whether a CBD-containing product is effective or dangerous.
Another problem with current saliva-based blood tests for CBD is the detection window. Most kits available for saliva testing only cover a two-hour window. “The window is really small,” explains Sisler. “LCR technology is capable of detecting a smaller concentration of CBD over a one-hour time period.” He estimates that a CBD hair test will have a detection window of approximately two weeks, well within the range of most people’s daily hair drug use.
To meet FDA requirements, manufacturers of CBD hair products will have to include a CBD concentration of at least one percent in their products. So far, no pharmaceutical companies have developed a CBD hair drug, so this challenge is not necessarily insurmountable. Nevertheless, CBD manufacturers are working on including a second, hemp-based component to their products, which could increase the concentration of CBD they include. The second ingredient, which could be hemp-derived resins or concentrates, may prove to be more useful to patients who need or prefer, a higher concentration of CBD.
Sisler cautions against anyone assuming that a low-grade CBD oil drug test would fail catastrophically if the second ingredient was hemp-based. “Harmaceutical grade” products are highly unlikely to contain compounds containing CBD. Even if a low-grade CBD product did contain the second ingredient, which has not been proven to be harmful, it would fail a comprehensive drug test because of the low concentration of CBD.