Does CBD Show up on a Drug Test? – Urine, Blood, and Hair

A paper sitting on a desk that says DRUG TEST RESULTS FAILED.

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CBD, a beneficial substance for a variety of bodily ailments, is often confused with its illegal cousin THC, especially when it comes to drug testing.

CBD does not show up on drug tests simply because drug tests are not looking for it. However, CBD products can contain trace amounts of THC, which can possibly show up on a drug test, but only if you are consuming “full spectrum” products very frequently.

CBD produces no psychoactive effects and is non-habit-forming, and when used with the same caution as any other relaxing substance, it should have no reason to interfere with one’s ability to do work, participate in sports, or function in day-to-day life. 

But what about CBD allows it to exist as a safe alternative to THC, and is there any risk of cross contamination?

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Will CBD show up on a drug screen?

CBD itself typically does not show up on standard drug tests. Drug tests are usually designed to detect THC (tetrahydrocannabinol) and its metabolites, not CBD. However, there are some important considerations:

  • THC contamination: Many CBD products, especially full-spectrum ones, may contain trace amounts of THC. If these products are used regularly or in high doses, THC could accumulate in the body and potentially trigger a positive drug test.

  • Product quality: Due to lack of regulation, some CBD products may contain more THC than advertised. Studies have shown that many CBD products are not labeled accurately.

  • Type of CBD: Full-spectrum CBD products have a higher risk of containing detectable levels of THC compared to broad-spectrum or CBD isolate products.

  • Individual factors: Metabolism, frequency of use, and dosage can all affect how the body processes CBD and any trace amounts of THC.

  • Test sensitivity: More sensitive drug tests may detect lower levels of THC metabolites.

To minimize the risk of failing a drug test while using CBD:

It’s important to note that while pure CBD use is unlikely to cause a positive drug test, it’s not impossible due to these factors. If you’re subject to drug testing, it’s safest to consult with the testing authority about their specific policies regarding CBD use.

Will full-spectrum CBD oil make me fail a drug test?

Full spectrum CBD is unlikely to make you fail a drug test because it contains only trace amounts of THC, but because cannabinoids are fat-soluble and build up in the body over time, things can become risky in the long-term.

Full spectrum CBD is an extract that includes all of the various compounds that one might find in the plant it is being distilled from. 

This can mean that if it is distilled from a strain of marijuana, it will include some amount of THC. If it is distilled from a hemp plant, that amount will likely be very small to the point of being negligible.

Because CBD products sold legally in the U.S. are derived from hemp, the amount of THC in them, even full spectrum products, must contain 0.3% THC or less by weight.

If random drug testing is a part of your job, it may also be best to heed this advice (as it can be hard to ensure that the amount of THC in your system is below what tests look for).

Types of drug tests and screenings

There are several methods used to test for drugs, each with its own advantages and detection windows. The most common drug testing methods are:

  • Urine Tests – Urine testing is the most frequently used and least invasive method. It detects metabolites of drugs and can identify substance use within the past few days. Urine tests are often used for employment screening and are the approved method for federally mandated drug testing.

  • Blood Tests Blood tests can detect active drug use and are typically used when someone is suspected of being under the influence. They offer high accuracy but have a shorter detection window, usually only a few hours to days after use.

  • Hair Follicle Tests – Hair tests can detect drug use over the longest period, typically up to 90 days. They are considered highly reliable and difficult to cheat but are more expensive than other methods.

  • Saliva Tests – Saliva tests are quick, cost-effective, and can be conducted on-site. They can detect very recent drug use, typically within the last 48 hours.

  • Sweat Patch Tests – These tests involve wearing a patch that collects sweat over a period of time, usually 7-14 days, and can detect drug use during that period. 
Older women with dry hands holding out a lab test cup filled with urine.

What type of drug test do most employers use?

Most employers rely on urine testing for both pre-employment and random drug screening. Urine testing is fast, simple, and affordable, so it’s the best option for employers looking to test on a frequent basis.

Employers usually do random drug testing, or at least claim to, on the basis of promoting workplace safety. Both pre-employment and random drug screenings tend to stick to a 5-panel test, which looks for:

  • Amphetamines/Methamphetamines
  • Cocaine
  • Opiates
  • THC
  • PCP

While it could technically be possible for an administrator to add a test that detects the presence of CBD, it would be incredibly uncommon, and is not part of typical routine drug testing. A company would likely have to make a very specific request for a CBD oil drug test.

Additionally, CBD does not get you high, and has little to no effect on an individual’s ability to function in the workplace or at school. 

Employers generally are unconcerned with testing for it, just as they are unconcerned with other non-intoxicating substances, such as Advil or Motrin.

Does CBD show up on a 10-panel drug screen?

No, CBD does not show up even on a 10-panel drug screen. That’s because CBD is not one of the substances being searched for; it’s simply not a drug that these tests are looking for.

Instead, a 10-panel drug screen looks for:

  • Cannabis: THC, synthetic cannabinoids
  • Cocaine
  • Amphetamines/Methamphetamine
  • Opiates
  • Barbiturates 
  • Benzodiazepines
  • PCP
  • Methadone
  • Methaqualone
  • Propoxyphene

Can you pass a DOT drug test on CBD oil?

You can indeed pass a drug test administered by the Department of Transportation after using CBD oil so long as it is broad spectrum or is a CBD isolate product.

Hemp-derived products contain so little THC that it shouldn’t be detectable on drug tests, but if you’re looking to avoid it altogether, stick to CBD isolate oils. Click here to read our deep dive into DOT drug testing.

Will CBD show on a probation drug test?

No, CBD will not show up on a probation drug test because tests do not look for CBD. 

Probation drug tests are generally saliva or urine tests. Even extensive, 10-panel tests don’t look for CBD; it’s not considered a controlled substance and is federally legal, so it’s not a legal concern.

It’s best to stick to CBD isolate products while on probation to avoid the risk of any THC-build up, which can be detected by drug tests, from occurring.

How long does CBD stay in your system?

CBD is estimated to stay in an individual’s system for 2-5 days, however, a number of variables can affect the full length of time it stays.

CBD can be affected by the frequency with which an individual uses it. It is a compound that has a tendency to remain in an individual’s body and build up over time if used often enough. Someone who has only used it once will likely have CBD in their system for a shorter amount of time than someone who’s an habitual user. Dosages can also have an effect. Someone who takes a higher dosage will take longer to completely rid it from their system.

Additionally, as with other substances, food and water intake can affect how quickly it is metabolized. Having a lower BMI, or having eaten less food can make it metabolize more quickly.

Again, as with many other substances, the way you ingest or use CBD can affect how quickly it metabolizes. Oral ingestion of pure oils or vaporized CBD can be much faster than edibles, balms, or rubs, which may take longer to be absorbed.

Conclusion

It is highly unlikely that an employer or administrator will test you specifically for CBD usage. It is uncommon in widely available testing kits, and there would not be much reason for an employer or administrator to seek out a test for a non-psychoactive, non-habit-forming substance. However, an employer could still theoretically test you for it.

It is somewhat unlikely, but still possible, for THC to show up in a drug test from use of products marketed as CBD, depending on the type and quality of product that you have purchased. If you are interested in limiting the amount of THC you ingest, it might be smart to purchase only broad-spectrum or CBD isolate products.

CBD can stay in your system for 2-5 days, but this can be changed based on a variety of variables, such as food and water intake, frequency and dosages, and method of use.

Shopping for CBD can be confusing, especially if you are worried about the labelling of the products you are buying. However, shopping from a reputable distributor can ease much of the worry, and can help introduce you to a world of products aimed at treating a wide variety of physical and mental health complications. Click here to shop from a wide selection of hemp and CBD products from a long list of honest and high quality distributors.

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Josh Murdoch

I was born with Cystic Fibrosis, and although it is incurable, cannabinoids have been allowing me to live my life as a healthy adult now for years. For that reason, I’ve dedicated my career to spreading the good news about cannabinoids. Currently, I work for a cannabis distribution company called Humble Cannabis Solutions which operates in California. Previously, I worked on two cannabis farms in northern California, one of which was located in the famous Humboldt County. I’ve also managed a medical cannabis delivery service in Marin County, California. I created CBD Facilitator to share what I’ve learned, and to recommend the best products that I have found in this chaotic market.

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Our Mission

Our goal is to educate you on all things CBD, enabling you to navigate this vast unregulated industry like a pro. We know all too well how overwhelming it can be to find trustworthy brands in this crowded market, so we’re here to help!

Shop CBD Products

Our Favorite Brands

No Discount Code
😞

CBDFACILITATOR
(15% Off)

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(15% Off)

FACILITATOR
(10% Off)

Topical Cream

Perfect for Localized Pain and Inflammation Relief!

Sun Grown & Slow Cured
NO tobacco. NO additives. NO junk.