How Long Does CBD Stay In Your System?

Thousands of people, if not millions, believe in the power of CBD oil. It has become one of the most sought-after natural medication for pain management.

Even science goes with the flow. Researchers test CBD to humans and animals to maximize their full potential.

However, some are still hesitant because of its source. Yes, some people still think that everything that comes from cannabis is equivalent to getting high.

They also believe that the strain could stay in the body for a while. But does it really? Let’s find out how long does CBD oil stay in your system.

But First, What is CBD?

Cannabidiol or CBD is one of the many compounds found in the Cannabis Sativa plant species. Studies show its prospective in providing health benefits.

Researchers continue testing CBD in the treatment of complex conditions like auto-immune diseases. But one breakthrough it is known for is Epidiolex, a CBD-based drug for seizure reduction.

The Food and Drug Authority (FDA) approved of Epidiolex. This means that there really is something that CBD could do to create an impact on the world of health and science.

Our endocannabinoid system has cannabinoid receptors (CB1 and CB2 receptors) that interact with substances like CBD. But unlike others, CBD does not bind with these receptors. Take note of that fact because it would come in handy as you read along.

So, How Long Does CBD Really Stay?

Most of us wonder how long CBD stays in the body. To be honest, the answer is not definitive.

However, you also have to understand that CBD is not like a free-sized shirt that would fit anyone. There are many factors to consider:

CBD Products Used and Method of Intake

Remember that you can get CBD through oils, capsules, creams, vapes, and gummies. Your body absorbs each depending on where they are passing through.

For instance, if you take CBD oil bilingually, it has to go through the digestive system. If you inhale CBD using a vape, it goes directly to your lungs, which is faster than digestion.

Body Mass Index or BMI

Your CBD intake depends on your weight. If you are on the heavier side, you should use more CBD than usual. FDA is yet to set a standard but medical practitioners in the United States recommend at least one mg of CBD oil for every 10 lbs.

You can add up to 6 mg of CBD per 10 pounds depending on your tolerance.


Age is also a factor when calculating the impact of CBD in the body. WHO reported that the human body tolerates CBD well in general. However, children are discouraged to consume CBD. That’s why you may observe that some labels allow the use of CBD starting at age 21.

CBD with or without THC

I have mentioned earlier that CBD does not bind with our cannabinoid receptors. Tetrahydrocannabinol or THC is another type of cannabinoid found in the cannabis plant. Unlike CBD, THC actually binds with the receptors, which gives euphoria.

The combination of CBD and THC called the entourage effect also provides numerous health benefits. However, note that THC takes a while to exit the body. In fact, traces can still be found in your hair follicles up until 90 days.

Depending on what you consumed, it would usually take five to twenty minutes to take effect. The effect itself may last up to four hours.

However, it is not the end of it. Our system expels what’s left in it gradually over time.

Because Science Says So

Even when the effect of CBD wears off, the cannabinoid is still there. According to a critical review initiated by the World Health Organization or WHO, it may take approximately four days to totally exit your body.

But again, I will go back to my initial response: it is not definitive. You should take note that this is a review in a controlled environment. That means the effect may be shorter or longer on your experience depending on the factors mentioned above.

Consequently, you don’t really need to worry too much. There are no reports of cases of which CBD stayed in the body for more than a week.

How Long is CBD Detectable in Urine?

Technically, your urine should not show any traces of CBD. But if the product you bought has traces of THC in it, it would definitely show up in your urine.

What would trigger as positive on your urine test is the presence of THC. According to the National Institutes of Health (NIH), workplace tests would show positive if you have 50 nanograms per mL of THC-COOH in your urine.

The more diligent you are in using cannabis, the longer it would get detected on your urine sample. So, check the label of the CBD products you plan to buy to know how much THC it contains.

How About in my Blood?

If it’s because of work, it is unlikely for employers to ask for your blood samples for drug tests. It only happens when you are a serious offender.

But just in case, it is only THC that would warrant you a positive in bloodwork. You can only detect THC in the plasma within five hours.

However, some of its metabolites stay for a week. Impairment happens only when concentration is up to 5 nanograms per milliliters.

Will my Saliva Test CBD Positive?

Well, testing your saliva per se is not usual. But if it’s necessary, 4 nanograms per mL of THC could be detected within 72 hours.

Of course, if you are a cannabis user for quite some time now, THC would stay in your system longer than expected. Don’t get your hopes high on this one, too.

On the other hand, pure CBD should not show on your saliva within three days or even less.

Does CBD Show Up on a Drug Test?

Just like in urine testing, CBD should not show up on your drug test is given that it has no THC in it. Otherwise, you are at risk of getting detected.

Other than using CBD products with high traces of THC, here are some reasons why some people may fail drug tests:

  • Cross Contamination – it is possible that even the tiniest amount of THC combined with CBD could get you in trouble. It usually happens when you go to a cannabis store, which mixes CBD with THC most of the time.
  • CBD Products Are Mislabeled – Another compromising situation is when you are not aware that the product you bought is mislabeled. Did you know that most CBD products sold in local stores and online could actually deceive you? They’d say that you are getting pure CBD but it actually has 0.3% THC, which might still lead to a disaster.
  • Second-hand Smoke – If you have long exposure to people who smoke pot, there’s a huge tendency for your drug test to show positive. The false-positive result would most likely show on hair tests.

What Should You Do to Avoid Getting Positive?

Prevention is better than cure. So as not to have your employer doubt you, you may check out the following:

  • Read – Do not just settle for something just because a friend or an article told you so. Read numerous research and reviews online to make sure that the CBD products you will buy are 100% pure.
  • Check the source – Remember that there are only certain places where you could get good quality hemp. Do a background check to know where the manufacturers get their plants. Don’t fall for “affordable” prices. Take note: quality over quantity.
  • Prepare yourself for the test. Avoid people who smoke pot if you could so that you would not get second-hand exposure. Sorry, dear friends, see you in a month.
  • There is no harm in asking. You simply want to know what’s in it for you before you buy the product. Sellers are required to have customer service hotlines for you to ask questions. Feel free to ask about how they process their products, etc.


If you are getting pure CBD, there is no reason for you to worry. All you need to do is to be more vigilant. You have to understand what you are buying before you pay for it.

Yes, most CBD products available contain THC. But make sure that these items do not have more than 0.3% of THC in them.

Personal advice, though: if you are aware of the drug testing date, do not risk it. Prepare your body for it and just use the products afterward. This way, you do not get even false-positive results.

To sum up, CBD in its purest form is one of the safest and most effective natural alternatives available in the market. Even scientists believe in its potential that’s why they continue researching it.

Nonetheless, we can never use ignorance as an excuse. Make yourself knowledgeable and identify what is best for you and your health. Otherwise, you are putting yourself into unexpected (and troubling) situations.

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