Standard drug tests look for THC rather than CBD. But CBD users are still at risk of failing drug screenings. Find out how long CBD stays in your body. Several factors determine how long CBD stays in your system. Learn how to predict the effects of CBD, how long it will show up on drug tests and more. Consuming CBD may have many potential health benefits, which explains its popularity. We break down the factors that impact how long CBD stays in your system.
How Long Does CBD Stay in Your System?
Cannabidiol (CBD), and tetrahydrocannabinol (THC) are two of the most well-known compounds in cannabis plants. The latter has psychoactive effects and causes the high marijuana is famous for. THC use impairs judgment and coordination.
As a result, THC and its byproducts are what’s tested for in standard 5-panel and 10-panel drug tests. Pure CBD will not show up on these tests. Tests that can detect CBD are available but they’re more expensive and are not widely used.
How Long Does CBD Stay in Your Urine?
In some cases of heavy use, CBD can stay in the system for up to a week, and windows of detection extend to more than a month. In the case of single exposures, THC and its metabolites are detectable in urine for about 3 days after the last time taken.
Most urine tests come back positive if you consume more than 2,000 mg of legal CBD products per day. This might seem like a large number but frequent use of CBD products could trigger a false-positive test result. This is a possible outcome when you consider that CBD and THC accumulate in the body.
How Long Does CBD Stay in Your Blood?
Blood tests focus on recent use. THC is only detectable in blood for approximately 5 hours, but its metabolites can remain in the system for up to 7 days.
Taking CBD products with unknown amounts of THC would only yield a valid result if a lab test was done on a blood sample within this short period of time.
How Long Does CBD Stay in Your Saliva?
THC can be found in saliva for about 72 hours but chronic use of CBD products tainted with THC could extend this window of detection. Analyzing saliva to detect CBD is rare.
How Long Does CBD Stay in Your Hair?
In general, substances such as CBD can be detected in hair up to about 3 months after they were last taken. Trace amounts of THC will likely not show up in a hair test.
How Long Do the Effects of CBD Last?
The duration of CBD’s effects depend largely on the method of consumption, but in general, CBD lasts between 2 and 6 hours.
Smoking or vaping causes the substance to enter the body rapidly via the lungs. Two teaspoons of a concentrated CBD tincture taken sublingually can also take effect within an hour. These fast-acting modes of administration tend to wear off sooner too.
Chewables have to go through the GI tract before entering the bloodstream, so effects take a little longer to kick in with peak blood levels being reached at around three hours after ingestion. This method of consumption has a more prolonged effect lasting up to eight hours. People often over-consume edibles because the results aren’t instant.
Topical applications like creams also last longer. Because CBD is not psychoactive, it’s more difficult to determine when it’s actually taking effect.
How Does CBD Affect the Brain?
Research on THC in the 1990s led to the discovery of the endocannabinoid system (ECS). Scientists found that our bodies naturally make molecules that are similar to cannabinoids from cannabis plants.
These molecules support our immune systems and are broken down when they’ve completed their function. There are receptors for endocannabinoids all over the body including the central nervous system (CNS). And as it turns out, THC binds to them and CBD does so weakly or not at all. CBD may in fact reduce the effects of THC by blocking it.
CBD influences the release of neurotransmitters in the brain which impact pain, anxiety, sleep, and other functions.
Factors That Influence Detoxing from CBD
Regardless of gender, CBD is generally believed to have an elimination half-life of one to two days. This means that half of the dose leaves the body at this time. But how long it lasts is not the same for everyone. Unique factors that determine how quickly CBD is expelled include:
- Weight – CBD is fat-soluble and is stored in fatty tissue
- Frequency of use – CBD can accumulate in your system
- Mode of ingestion
Most drug tests look for THC rather than CBD. If you are concerned about an upcoming drug test, avoid the use of CBD products that could contain unknown amounts of THC. THC can typically be detected within these windows:
- Urine – 3 to 30 days
- Blood – 5 hours up to a week
- Saliva – 72 hours or more with heavy use
- Hair – about 3 months
Treatment for CBD Dependence
According to the World Health Organization (WHO), pure CBD has no abuse potential. But CBD products can cause psychological dependence. And THC can cause marijuana use disorders and withdrawal symptoms which negatively impact users’ health and productivity.
If you or someone you know is struggling with a dependency on CBD, help is available. Treatment programs include tailored therapy sessions to address the underlying issues leading to substance misuse. Humans can form bad habits, but bad habits can be unlearned. Take the first step towards a brighter future today.
How Long Does CBD Stay in Your System?
CBD can remain detectable in your system anywhere from 10 hours to 25 days depending on whether you smoke it or injest it and how often you use it.
Cannabidiol (CBD) is a popular chemical compound capable of exerting positive effects on users over time. Yet not everybody experiences the same benefits with CBD use. One reason for this discrepancy could be that people metabolize the chemicals differently. This raises an important question: How long does CBD stay in your system?
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Factors That Influence How Long CBD Stays in Your System
Several factors determine how long CBD stays in your system. The first one is the quantity of CBD. The more CBD you take, the longer you’ll experience the benefits, with heavy doses lingering for the better part of a day.
Quality of CBD matters, too. You might take 100 mg of CBD and feel next to nothing if it’s low quality. Pure CBD stays in your system longer than products with fillers and additives. However, there should be no difference between the duration of full-spectrum CBD and that of broad-spectrum CBD.
Your frequency of use also influences how long CBD remains in your system. If you are taking CBD every day, it can cause cannabidiol to accumulate in your body. That’s why you may need to take CBD for a week to begin to feel the desired effects since small doses clear your bloodstream rapidly.
Your body type and metabolism dictate how fast CBD effects will occur and how long they will remain in your body. For instance, people with a fast metabolism can process cannabis products within minutes, while others may take hours. CBD will also leave your system quickly if you have a low body mass index and high-water content.
The food you eat before taking CBD impacts how the compound reacts in your body. If you eat CBD on an empty stomach, it’s the first thing your metabolism will break down. However, if you have a big meal beforehand, it will slow your metabolism and digestion when processing CBD.
Finally, your method of consumption when you take CBD makes a difference in how soon you will feel the effects of CBD and how long it will last. Research shows that vaping provides almost immediate benefits because the cannabidiol goes directly into your lungs and then your bloodstream. If you use a cream, lotion, or edible, your metabolism has to break down the product before you feel the effects, which may take hours.
How Long Do the Effects of CBD Oil Last?
As we mentioned above, several factors dictate how you may experience CBD. For example, a short, thin man using CBD isolate for the first time will experience pain relief for longer than a large man that uses it habitually. As a rule of thumb, CBD oil lasts for four to six hours long, though a heavy dose may last 24 hours.
You will find three popular methods of CBD consumption: sublingual, inhalation, and topical. Sublingual involves placing the CBD product under your tongue. The cannabidiol will take effect in two to four minutes since the CBD travels through the mucous membranes in the mouth and into the bloodstream, bypassing the digestive system entirely.
Inhalation allows people to ingest CBD through vaporized particles. A joint or vape pen turns the cannabidiol into fine specks that individuals can inhale. Once the CBD enters the lungs, the body absorbs it rapidly, making vaping ideal for immediate pain relief.
Topicals take the longest amount of time to work, ranging from 15 minutes to two hours. The lotion, cream, or salve has to dissolve into the skin before the metabolism can process it. The slow infusion means that topicals have the most extensive detectable window of any method of consumption.
Does CBD Show Up on a Drug Test?
According to the 2018 U.S. Farm Bill, any hemp-derived product must contain less than 0.3% tetrahydrocannabinol (THC). That means that both CBD and minute amounts of THC are present in products like full-spectrum hemp-derived CBD.
That trace amount of THC can be a valid concern if you want to pass a drug test. On the other hand, if you use a broad-spectrum CBD, by definition, it should have no THC. However, you only have the word of the company that provides it that all THC has been removed unless you personally have it tested.
This distinction matters because most companies test for THC, not CBD. THC, the compound responsible for psychoactive effects, is the main component of the marijuana form of cannabis but only a very minuscule part of hemp-derived CBD. While CBD and hemp products are legal in some form in most states, the same does not apply to cannabis containing more than 0.3% THC, known as marijuana.
Expect to have small amounts of THC stay in your system and show up on drug tests unless you consume broad-spectrum hemp CBD or CBD isolate. The chances of a positive drug test go up with routine ingestion of CBD-containing THC. That’s because your fat cells may store the THC for a few days after ingestion.
Just because you don’t feel the effects of the THC in hemp-derived CBD doesn’t mean it’s not detectable in urine, blood, or saliva drug tests. The half-life of CBD ranges between 18 and 32 hours. The half-life refers to the point at which the CBD products have 50% of the original dose’s potency.
The Half-Life of CBD
Every drug that enters your system gradually leaves it. CBD is no exception. Your body will break down the cannabidiol in your digestive system and liver before getting rid of it through urine, hair, and sweat.
A study from Pharmacology, Biochemistry, and Behavior looked at CBD half-lives on patients with Huntington’s disease. Each person received a 700 mg dose of CBD each day for six weeks. Researchers found that potency dropped 1.5 ng/mL a week after the last dose.
So what do these results tell us about the half-life of CBD? The study found that even a substantial dose of CBD is undetectable after a week. The patients with Huntington’s disease took 700 mg of CBD per day when most people only use 100 mg of CBD or less.
How long CBD stays in the body depends on how frequently someone uses it. A person that uses CBD more regularly may have it stay in their system for three or four days, while a first-timer may only have it detectable for two days. Researchers have determined that whether a user is male or female does not influence CBD’s half-life.
Let’s use an example to illustrate how long it takes to flush CBD from your system. If you consume 100 mg of CBD that has a half-life of one day, you can expect to have the maximum concentration of CBD (100 mg) in your body after one hour.
The CBD concentration in your body will drop 50% (to 50 mg) after 24 hours. This point marks the first half-life. The CBD concentration will exponentially decline from here until it disappears.
The next half-life occurs two days after your initial dose. The concentration has shrunk to 25 mg and will drop to 12.5 mg and 6.25 mg in the subsequent daily measurements. At this point, the CBD should be undetectable.
Types of Drug Tests for CBD and THC
There are four main types of drug tests that are used to detect CBD and THC. Each type tests a different part of the body, which results in varied results.
Urine Drug Test
CBD remains in urine for 3 to 5 days. As long as you don’t use CBD for at least 5 days leading up to your test, you should be fine. Your metabolism can process and excrete hemp-derived CBD relatively quickly so that it’s no longer detectable.
THC metabolites, however, linger in urine for up to 15 days. Metabolites are a byproduct of the body metabolizing a compound and turning it into a different substance. These compounds stay in your system longer than the parent drug, which is why testers look for them to find evidence of drug use.
Urine tests are one of the most common and popular ways to screen for cannabis. There’s a good chance you’ll encounter one at your next screening.
If you have used full-spectrum CBD recently, you can help it leave your system faster through vigorous exercise and fluid consumption.
Hair Drug Test
The THC metabolites from CBD products stay in your system for up to 90 days. The compounds that pass through your bloodstream eventually become part of your hair. It takes at least 5 days before CBD and THC are detectable in your follicles.
The good news is that hair drug tests are rare. Most employers and organizations rely on saliva or urine tests because they’re faster and cheaper. There’s also the risk of prescribed medications for your hair, leading to false positives.
Saliva Drug Test
Research on how long CBD stays in the saliva isn’t as robust as in other areas. If you consume CBD oil, expect the dose to last in your oral fluids for up to three days. The duration may be longer depending on your method and frequency of use.
Once you consume the CBD oil, it will appear on the saliva test within minutes. Fortunately, few companies use this method to look for THC or hemp-derived CBD in the body. States that permit cannabis allow people to have up to four nanograms of CBD per milliliter in their saliva.
Blood Drug Test
Blood tests are far less prevalent than urine or saliva-based ones. One reason is that they’re not as reliable for detecting CBD or THC. THC is only detectable in the bloodstream for up to five hours, while CBD stays in your blood for up to a week.
Blood tests work better to determine if someone is currently impaired, which is why police officers might take a blood sample following a DUI charge. If you live in a state where cannabis is legal, you can have up to five nanograms of THC per milliliter of blood.
How to Detox
We’ve answered the question, “How long does CBD stay in your system?” Now, it’s time to find solutions to speed up the excretion of CBD, THC, and other cannabinoids. The process can increase how fast your body metabolizes CBD and also lower the chances of a positive test, even if you ingested CBD within 24 hours of your screening.
The first step is to stop taking any product that contains THC. That means going cold turkey. Lowering your frequency of use to zero ensures that no new CBD or THC metabolites will appear in your system before the test.
Step two is to hit the gym. Vigorous exercise speeds up your metabolism, forcing your body to sweat and break down fat cells for energy. Research suggests that 45 minutes of intense aerobic exercise can increase your metabolic rate and may accelerate CBD’s exit from the body.
Don’t forget to drink plenty of water and eat healthy, too. The body needs water to cleanse your system and expel toxins. A diet full of fats, sugars, and processed foods makes it more challenging for your metabolism to process the CBD out of your system.
Using CBD While Breastfeeding
The U.S. Food and Drug Administration recommends that women who are pregnant or breastfeeding not use CBD. Research on CBD’s effects on children remains in its infancy, so the FDA advises a cautious approach.
Researchers do know that CBD can pass from mother to child through breast milk. CBD is a fat-soluble compound, meaning that it gravitates towards fatty compounds as a carrier. A CBD product may also have THC, which could negatively affect the breastfed child.
How long does hemp or hemp oil stay in your system?
When people ask, “how long does pure CBD oil stay in your system?” They are usually talking about ingesting CBD as an oil or tincture. When taken in this form, the CBD will take longer to leave the system.
If you are a heavy user, it could take up to 25 days, but 10-14 days is more common.
How long does CBD stay in your blood?
CBD can stay in your blood anywhere from 2-25 days after consumption. Your method of consumption, frequency of use, and BMI will all affect how quickly it leaves your body.
How long does CBD stay in your system for a saliva test?
CBD is detectable in saliva for around 72 hours after use.
How long does it take for CBD to get out of your system?
It takes anywhere from 2-25 days for CBD to completely get out of your system. It will leave more quickly for people that only use it once and have a low body fat percentage.
How to get rid of CBD oil in your system?
To clear your system of CBD, you need to do several things. Your body will eliminate CBD naturally in 2-25 days, but with some help, it can happen sooner. CBD is a fatty molecule, so it loves the fat in your body. Pushing it out of the fat with exercise and lots of water helps the body to eliminate it. Also, getting a lot of fiber in your diet can aid the process further.
How long does a CBD gummy stay in your system?
Like CBD oil, CBD gummies stay in your system longer than CBD that is smoked or vaped. If you are a heavy user, it could stay in your system up to 25 days, but 10-14 days is more common.
How long does CBD stay in your hair follicles and hair?
While a hair test for CBD is extremely uncommon, it is possible for CBD to be detected in the hair up to 90 days after use.
How long does CBD stay in your system when smoked?
While smoked CBD can be metabolized faster, it’s best to assume that it takes 2-25 days for it to completely leave the body. It will leave more quickly for people that only use it once and have a low body fat percentage.
How long does CBD oil stay in your system for a urine drug test?
When people ask, “How long is CBD detectable in urine?” they are usually concerned about a drug test. It’s very rare for CBD to be part of a drug test. THC, the other major chemical in cannabis and hemp is what’s commonly tested for. Even legal CBD products can have .3% THC in them. This could be enough to trigger a positive on drug test. If you are at all concerned, it’s best to not consume any CBD products 25 days before a test.
The Bottom Line
One of the most frequently asked questions about CBD oil and CBD products is “How long does CBD stay in your system?” The answer depends on several factors, including how much you use, your body weight, metabolism, and consumption method.
While most drug tests look for THC and not CBD, your CBD products may contain trace amounts of THC that lead to a failed drug test. While CBD has a half-life of 18 to 32 hours, it can stay in your system for several days.
Here’s the bottom line: You’re unlikely to fail a drug test because of CBD alone in isolate form. Combining THC and CBD in full-spectrum form is a different story. If you want to eliminate the chances of a positive drug test, you can use CBD isolate or no CBD product at all.
How Long Does CBD Stay In Your System?
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Table of Contents
- 5 Factors That Affect How Long CBD Stays in Your System
- How Long Do the Effects of CBD Oil Last?
Research shows consuming cannabidiol (CBD) may have a host of potential health benefits, such as reducing anxiety, relieving pain, and promoting sleep—explaining the latest surge in CBD’s popularity. But people who use CBD—either regularly or just once in a while—might wonder how long it stays in your system.
No matter how you take CBD, it’s likely that the clinical impact can last for several days after use, says Kelly Johnson-Arbor, M.D., a triple-board certified medical toxicologist and co-medical director of National Capital Poison Center. In fact, a 2020 study in the Journal of Analytical Toxicology found people who consumed a single dose of a standardized CBD formulation had detectable levels of CBD in their urine for four to five days after ingestion  Spindle T, Cone E, Kuntz D, Mitchell J, Bigelow G, Flegl R, Vandrey R. Urinary Pharmacokinetic Profile of Cannabinoids Following Administration of Vaporized and Oral Cannabidiol and Vaporized CBD-Dominant Cannabis. Journal of Analytical Toxicology. 2020;44(2):109-125. .
Continue reading to discover the myriad factors that may impact how long CBD stays in your system.
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5 Factors That Affect How Long CBD Stays in Your System
According to Dr. Johnson-Arbor, how long CBD stays in your system can depend on various factors.
How and What You Eat
How much you eat, as well as what you eat, can impact how your body processes CBD, says Dr. Johnson-Arbor. After consuming a high-fat meal, higher levels of CBD are typically present in the bloodstream, making its half-life (the time it takes for half the amount of a substance to be eliminated from the body) longer than in individuals who consume CBD while fasting, she explains. In other words, if you consume CBD on an empty stomach and don’t eat immediately, CBD is more likely to leave your system sooner. Meanwhile, eating high-fat foods, such as avocados, cheese and nuts, can have the opposite effect. One 2019 study also found CBD exposure and absorption increases significantly when paired with high-fat foods  Birnbaum A, Karanam A, Marino S, Barkley C, Remmel R, Roslawski M, Gramling-Aden M, Leppik I. Food Effect on Pharmacokinetics of Cannabidiol Oral Capsules in Adult Patients with Refractory Epilepsy. Epilepsia. 2019;60(8):1586-1592. .
Medications Processed in the Liver and Liver Disease
Certain medical conditions may impact how long CBD stays in your system. “Since CBD is metabolized by the liver, people with liver disease or who take other medications that are metabolized by the liver may have altered metabolism of CBD,” says Dr. Johnson-Arbor. She explains that the human liver contains enzymes that help the body break down medications and other compounds, and some medications can increase or decrease the activity of these enzymes. “When this happens, medications can be metabolized either faster or slower than normal, and this can lead to unwanted adverse reactions,” she says. Since CBD is metabolized by liver enzymes, there can be a potential drug interaction with many other medications.
Frequency of Use
If you use CBD frequently, it can build up over time and stay in your system longer, largely because CBD is highly soluble in fat. “This means that it can build up in our fatty tissues for a long period of time after heavy use and can therefore remain in the system for prolonged periods of time (e.g. weeks) in heavy users,” says Dr. Johnson-Arbor.
How Much You Use
Unsurprisingly, the more CBD you take at once, the longer it stays in your system. A 2005 study in the journal Therapeutic Drug Monitoring found taking 1.35 milligrams of CBD was only detectable in the blood for about six hours after ingestion, but higher doses were detectable for longer periods of time  Nadulski T, Pragst F, Weinberg G, Roser P, Schnelle M, Fronk E, Stadelmann A. Randomized, double-blind, placebo-controlled study about the effects of cannabidiol (CBD) on the pharmacokinetics of Delta9-tetrahydrocannabinol (THC) after oral application of THC versus standardized cannabis extract. Therapeutic Drug Monitoring. 2005;27(6):799-810. .
Type of CBD Administration
The way in which you consume CBD can impact how long it stays in your system. According to a 2018 review, smoking or inhaling CBD not only causes CBD to enter the bloodstream faster but also leave the body quicker. Meanwhile, the same review found CBD oil can stay in your system longer—up to two to five days. Dr. Johnson-Arbor explains that the reason smoking or inhaling drugs leads to faster clinical effects than consuming a drug orally is because orally administered drugs have to be absorbed through the gastrointestinal tract, and that takes more time. However, whenever you’re talking about how long CBD can stay in your system, it’s important to remember that it really depends on the frequency of use. “CBD (and other cannabinoids) are fat soluble, which means that they can accumulate in fat tissue after chronic use and then be released back slowly into the blood for elimination from the body,” she says. “This means that chronic users may have longer detection times than acute or one-time users (the latter is what’s generally represented in clinical studies and may not be applicable to the general population). The same is true for smoking and inhaling CBD. I don’t want people to get the wrong impression and believe that no matter how much or how frequently they use, CBD will only be detectable in their system for two to five days.”
How Long Do the Effects of CBD Oil Last?
How long the effects of CBD last varies greatly depending on the factors discussed above. “In a study involving healthy individuals who consumed a highly purified CBD formulation, the elimination half-life in the bloodstream was 14 to 17 hours. Since it takes approximately five half-lives to completely eliminate a drug from the human body, it’s likely that CBD stays in the system for about 85 hours, or about 3.5 days” says Dr. Johnson-Arbor.
So, based on the half-life of the drug, it’s likely that detectable levels may be present for several days after use.