cbd oil for drug test

Will CBD Oil Make Me Fail a Drug Test?

Pure CBD oil will pass a drug test. However, most CBD is not entirely pure and contains a certain percentage of tetrahydrocannabinol (THC). Drug tests usually screen for THC and its metabolites. The Food and Drug Administration (FDA) allows only 0.3% of THC in any product composition.

Effects of CBD and THC

THC acts by attaching itself to receptors in various brain parts. These receptors are attached to endocannabinoids, which your body produces naturally. The receptors in each of the brain areas have a specific effect.

1. Effects of THC

The following table indicates the various effects THC has on various parts of the brain.

Brain Part THC Effect
Cerebellum Responsible for drunk feeling
Neocortex Causes judgment and sensation impairment
Hippocampus Impairs Short-term memory
Amygdala Responsible for paranoia and panic
Spinal cord Responsible for pain reduction
Hypothalamus Increases appetite
Basal Ganglia Affects movement and reaction time
Brainstem Nausea and vomiting
Nucleus accumbens Responsible for euphoria

2. Effects of CBD

CBD and THC do not bind to the same receptors. Scientists suggest that CBD binds to serotonin receptors or boosts endocannabinoid levels. Serotonin is the hormone responsible for happiness, mood, and anxiety.

Researchers also suggest that CBD has some therapeutic effects on both humans and animals. They include:

  • Anxiety control
  • Psychosis control
  • Pain relief
  • Prevent vomiting
  • Promote neuroprotection
  • Reduce inflammation

How Do Cannabis Drug Tests Work?

There are various types of cannabis drug tests, and each is named after the substance it tests. They include:

  1. The urine test
  2. Mouth swab test
  3. Blood test
  4. Hair follicle test.

The most common test is the urine test. It screens antibodies that latch to various drugs and their metabolites to measure the presence of the drugs. Thus, it is an immunoassay test. Antibodies latched on to the drug will signal the test to be positive and vice versa.

However, the test will be negative if the drug concentration is below the federal government’s level. Furthermore, if you test positive, you may have to undergo a follow-up test. Follow-up tests are usually more accurate than drug screening. A follow-up test could be a high-performance liquid chromatography, gas chromatography, or mass spectroscopy.

Is It Possible to Get a False-Positive or False-Negative ?

It is possible to get a false-positive or false-negative in a cannabis drug test. Thus, patients should be honest about their cannabis use, and doctors should be very cautious and thorough in drug screening.

According to the American Family Physician (AAFP), single cannabis use can test positive after three days. Heavy cannabis users can test positive 30 days since last use. THC is soluble with body fat, and the body will store this fat in fat reserves. As the fat recycles or burns, it releases the THC and its metabolites. The kidneys will eliminate them as waste through urine.

Cannabis detection time for the blood test is up to 2 weeks, the mouth test is 12 hours, and the hair follicle is 90 days. Detox is necessary to get drugs substances such as THC out of your system.

Does CBD Make You Fail a Drug Test?

Cannabis drug tests for THC. Thus, you will fail a drug test if you consume CBD that has THC. Otherwise, pure CBD will pass a cannabis drug test. A 2019 study in Germany assessed the THC level in 67 food products with CBD.

The results showed that 25% of these products had more than 2.5 milligrams of THC. Consumption of more than 2.5 milligrams of THC in a day tends to cause intoxicating effects. Manufacturers may claim to have eliminated entirely THC from their products, but some products may be inappropriately labeled or failed to undergo third-party testing.

Furthermore, you may get a false positive or co-occurring disorder if you have recently consumed other drugs like:

  • Efavirenz
  • Dronabinol
  • Pantoprazole
  • Nonsteroidal anti-inflammatory drugs (NSAIDs) such as naproxen, sulindac, and ibuprofen

Constant use of impure CBD products can lead to dependence on cannabis, and you will need to get help. The use of marijuana is more prevalent among teenagers and is raising a lot of concerns . Getting addiction recovery help does not mean you are a failure.

Get Detox Help at NOVO Detox

You can get help to detox, recover from substance abuse, and address co-occurring mental issues at NOVO Detox. We aim to deliver medical safety, nourishment and comfort through professional expertise, proven detox medication, holistic therapies, cutting edge science, and efficiency.

Our medical team will create a personal plan which adapts your individual recovery needs throughout your stay. Upon admission, we will administer toxicology testing, social & psychological assessment, pharmacogenomic testing, and history & physical exam. We address various addictions like cannabis, prescription drugs, heroin, and more. You can also get help for co-occurring disorders such as bipolar disorder, anxiety disorder, and more.
Contact us now to get help for you or your loved one.

Final Word

You can pass a cannabis drug test if you take pure CBD oil. On the other hand, you will fail the test if you consume impure CBD. Cannabis drug tests usually screen for tetrahydrocannabinol (THC) and its metabolites.

There is a huge chance for false positives and false negatives, depending on what you take. Drugs like efavirenz, dronabinol, and more can lead to a false positive. Thus, when your drug test is positive, a confirmatory test is necessary. Follow-up tests produce more accurate results.

There are four tests to screen for THC presence in the body. They are urine, blood, mouth, and hair follicle tests. The urine test is the most common.

THC is soluble with body fats, and the body stores it in the fat reserves. When the body recycles or burns the fat, the kidney will eliminate the THC as waste in the urine. Each of the cannabis tests has a positive test window. The urine test window for heavy users is 30 days, the blood test window is two weeks, the hair follicle test window is 90 days, and the saliva test window is 12 hours after the last use.

Ready to Get Help for Cannabis Use Disorder, or Any Other Addictions?

You can get help for cannabis use disorder, other addictions, and co-occurring disorders at NOVO Detox in Los Angeles, California. Contac t us now for a personalized recovery plan for you or your loved one.

The Burning Question: Does CBD Show Up On A Drug Test?

CBD will show up on a drug test if the product is full-spectrum (whole-plant.) Here’s the catch though— the tests are looking for THC, not CBD.

What Is CBD?

Cannabidiol (CBD) is one of 113 known cannabinoids— chemical compounds— present in cannabis plants. Cannabidiol is one of the best-known cannabinoids, second only to THC.

The real differences between cannabidiol and THC are their effects on users. While THC cannabis is famous for THC and it’s euphoric and intoxicating effects, cannabidiol is non-psychoactive.

That means consuming cannabidiol by itself won’t get you high. This lack of intoxication has even led the World Health Organization to state, “In humans, CBD exhibits no effects indicative of any abuse or dependence potential….”

It’s important to note that there are three different types of CBD that we’ll be talking about in this post.

Full Spectrum

Extract from the entire hemp plant. Full-spectrum CBD contains all cannabinoids present in the hemp plant at the time of harvest, including trace amounts of THC. Examples include hemp flower, and full-spectrum CBD oil.

Broad Spectrum

Very similar to full-spectrum CBD, without the THC. Broad-spectrum CBD does require more processing and specialized equipment, both factors make this type of CBD harder to find and more expensive.


“Pure CBD.” CBD isolate is essentially just crystalized cannabidiol separated from all of the other cannabinoids present in the hemp plant.

Why Does Full-Spectrum CBD Show On a Drug Test?

THC, even in the trace amounts that are legally allowed to be present in full-spectrum CBD products can still show up on a drug test. As of now, all CBD hemp plants contain some amount of Δ9THC and THCa (which later turns into Δ9THC)

That means the trace amounts of THC present in the following CBD products can show up on drugs tests:

Hemp Flower

CBD hemp flower is the big one. You’ll never find CBD flower that’s completely THC-free. The genetics simply don’t exist yet. You may be able to find CBG flower that has nearly zero total THC.

CBD Concentrates (CBD kief & shatter)

CBD concentrates are generally derived from CBD hemp flower. For example you have to dry sift CBD flower to harvest CBD kief. It stands to reason then that nearly all CBD concentrates are full-spectrum and contain a certain amount of THC.

Full-spectrum CBD Tinctures

Most tinctures will indicate whether or not they are full-spectrum, broad-spectrum, or made with isolate as there are pros and cons to each. Full-spectrum tinctures are very effective, but they do contain trace amounts of THC.


Not all CBD edibles are made with full-spectrum extract, as many think it adds a bit of a hemp-y aftertaste. Sunset Lake’s CBD Chocolate Fudge does contain full-spectrum hemp extract meaning that it contains trace amounts of THC.

Do Full-Spectrum CBD Topicals Show Up On Drug Tests?

An exception to the full-spectrum rule— full-spectrum CBD topicals that contain small amounts of THC should not lead to a positive drug test. These external products should be safe to use because the cannabinoids will never actually enter your bloodstream.

Does CBD Isolate Or Broad-Spectrum CBD Show Up On a Drug Test?

Fortunately, because of advancements in cannabis science, we can make CBD products that have had all traces of THC removed. How do they do it? Check out our blog on Broad Spectrum vs. Full Spectrum CBD

Most products that have had their THC removed will read “broad-spectrum” or “made with isolate.” The former means that just the THC has been removed while other active cannabinoids like CBD and CBG are still present. If a product is made with CBD isolate it only contains CBD and no other cannabinoids.

There are a few drawbacks with broad-spectrum and isolate products such as effectiveness and price, but regarding our burning question— does CBD show up on a drug test— no, these products shouldn’t.

How To Find Out if Your CBD Shows Up on a Drug Test?

Still cautious about where you buy your CBD? That’s for the best. A good way to figure out if a product in question contains any THC is via a third-party certificate of analysis. All CBD vendors and retailers are required to have them on their products. Find Sunset Lake’s third-party tests here.

It will look similar to this:

Near the bottom of the cannabinoid profile you’ll see “Total THC” & “Total CBD.” We’re more interested in the former. If you’re worried about whether or not your CBD will show up on a drug test, definitely look for products that contain no “Total THC.”