There are many distinctions between marijuana and hemp that relate to CBD oil. Marijuana contains both THC (the "high"-inducing element) and CBD. Hemp contains CBD and only trace amounts of THC.
Hemp also contains many cannabinoids, which is a name for the compounds found in cannabis. CBD is only one example.
Reasons for Failing a CBD Drug Test
Drug tests look for tetrahydrocannabinol (THC), which is the element in marijuana that causes a high. CBD oils can have trace amounts of THC even if they're labeled “THC-free.” The FDA does not regulate these products, and mislabeling is common.
Using Product With THC
A study conducted at the internationally known Lautenberg Center For Immunology and Cancer found that CBD was more effective at treating inflammation and pain when used with other cannabis plant compounds.
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When it comes to marijuana, drug tests typically only screen for THC — the compound in cannabis that gets you “high” — or one of the compounds created when your body metabolizes it. And by law CBD products can only contain up to 0.3% THC.
How cannabis drug tests work
While the information here suggests CBD won’t make anyone fail a drug test, there’s no way to guarantee that. The only way to ensure you will pass a drug test is to abstain from using any sort of CBD product.
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Different types of drug tests have different detection thresholds, but the type you’re most likely to encounter is the “pee test.” To pass a urine drug test, the amount of THC in your body must be below 50 ng/mL. That’s the cutoff recommended federally by the National Institutes of Health and clinically by the Substance Abuse and Mental Health Services Administration, which helps set industry standards for lab certifications.
Even worse, many of these products “contained a significant amount of THC.” This is a huge problem considering CBD oil is famous for treating certain forms of childhood epilepsy. Inadequate or deceptive labeling means some parents could be accidentally giving THC to their kids.
Even if you choose a THC-Free product, that’s no guarantee. A company can follow the correct extraction process yet still ship a product with detectable levels of THC.
Full-spectrum results shouldn’t show any higher than 0.3% THC. Isolate and broad-spectrum should show non-detectable levels of THC or “ND.”
How Can You Make Sure That a CBD Product Doesn’t Contain THC?
How CBD oil affects a drug testing screening mainly depends on the type of CBD product, but there’s a lot more to unpack. Let’s take a look at how CBD can affect a drug test and if you can fail.
For now, let’s see why THC could still make its way into allegedly “THC-free” products.
Mislabeling of CBD Products
Consequently, isolates are less effective than full-spectrum.
According to one 2018 study from Frontiers in Pharmacology , CBD has a half-life of two to five days. However, all this means is you’ll eliminate half of the CBD within that time period.