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Does CBD Show Up on a Drug Test? Everything To Know

a CBD blood test on blue background

Can CBD lotion make you fail a drug test? Will one edible get you in trouble at work? These are common questions. The use of cannabidiol or CBD is common in health and wellness circles. CBD has become increasingly popular because it offers a wide range of potential benefits. There are numerous CBD products available including oils, tinctures, vape cartridges, edibles, and topicals. Some people worry that CBD will show up if they take a drug test at work.

You may think that you’ll have to undergo a CBD drug test. However, your employer is unlikely to request a CBD blood test or CBD urine test. While it is possible to test for CBD, drug tests usually screen for tetrahydrocannabinol (THC), which is a mind-altering cannabinoid. If you use hemp-based CBD products, you probably won’t have anything to worry about since these products may only contain trace amounts of THC.

However, if you use full-spectrum or broad-spectrum CBD which contains more THC, it’s possible the THC content may trigger a positive result. It depends on the quality of the product and whether you purchase from a reputable manufacturer or supplier. 

How Long is CBD Detectable in Urine? What You Need to Know

Employers typically require urine testing. The THC metabolite THC-COOH must be present in a concentration of at least 50 nanograms per milliliter for a urine test to come back positive. However, everyone’s body processes CBD products differently and multiple factors can affect how long it stays in the urine.

a CBD urine test with a marijuana leaf on white background
Several factors determine whether THC will be detected in urine.

One of them is metabolism. CBD molecules are fat-soluble so they bind to your fat cells. Your body’s fat content, therefore, plays a role in how quickly CBD is processed and eliminated from the body. If your body mass index is higher, your body will take longer to metabolize CBD and it will be detectable for a longer period.

The frequency with which you use CBD also plays an important role. If you use CBD often, it can build up in your body over time and it will take longer for your system to process it and remove it. However, if you use CBD infrequently or on an irregular basis, it will leave your body a lot faster.

Another thing that will affect a CBD urine test is dosage. The higher the dosage, the more likely it is that there’s a build-up of CBD in your body. In contrast, if you only use low doses, your body will process the substance faster.

The method by which you consumed CBD also affects whether you’ll pass a CBD drug test. If you used edibles or added an oil or tincture to your food or drink, the CBD will stay in your body longer than if you smoked or vaped.

Will CBD Isolate Make Me Fail a Drug Test?

CBD isolate is the purest form of CBD. Unlike broad- or full-spectrum CBD, it doesn’t contain any additional compounds. Since CBD isolate usually comes from hemp plants, it shouldn’t contain THC. 

Can I Test Positive Following a CBD Blood Test?

Blood tests aren’t typically used for drug testing in workplace settings. That’s because THC leaves the blood quickly. Instead, blood tests are used to determine if a person is currently impaired. If there were traces of THC in your CBD, they would be detectable in blood for about five hours. However, the metabolites can be detectable for up to seven days.

What About a CBD Hair Test?

CBD may be detected in your hair up to about three months after you last used it. However, traces of THC are unlikely to show up in your hair. 

The Bottomline on the CBD Drug Test

If you need to take a drug test before you start a new job or as a condition of employment, you’ll understandably be concerned if you use CBD. However, employers don’t typically request a CBD drug test. They are more concerned with THC. If you choose high-quality products, you’re unlikely to fail because of unexpectedly high THC levels in your CBD. When you shop with reputable companies like Greenbelt Botanicals, you can be sure you’re getting exactly what is on the label.


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