How Long Does CBD Oil Stay in Your System?

Risks of a Positive Drug Test When Taking CBD Oil

With so many people now using CBD products to help with various conditions, it’s no wonder that drug testing is becoming a topic of concern. The rise in popularity of these products has led to an influx of companies selling them. And some of them will say just about anything to get customers. This can include spreading misinformation by claiming that their products carry no risks associated with drug testing.

The unfortunate reality that we stress to CBD users is that there is a risk of testing positive on a drug test if you are taking any CBD product. If you cannot accept some risk of a positive test, then CBD should be avoided. But what if you are willing to accept the risk? How long does CBD oil stay in your system for the purpose of drug testing?

Is it the CBD or THC Being Tested For?

The key thing to realize is that with most drug tests, the CBD itself isn’t the main concern. It’s the trace amounts of THC in the product that is the issue. Hemp-derived CBD products can contain up to 0.3% THC to be legally sold online and in local stores.

For this reason, testing positive on a full spectrum CBD product shouldn’t be a huge surprise. But even “THC free” isolate products can still have very trace amounts of THC that can trigger a positive test.

Third party lab reports stating “ND” or “None Detected” is often used as “proof” that the product contains no THC. But in reality, this just indicates that there was no THC detected above the lab’s lower detection limit. What this means is that there can still be trace amounts of THC below that lower detection limit.


An example of what “ND” means from ProVerde labs


“ND” Example

While these trace amounts are very minor, and contribute nothing to the “entourage effect,” there is still a risk that they can build up in the body over time and trigger a positive drug test. The amount of time that takes can vary depending on the individual. How often you use the product, how much you take, your weight, and your metabolism can all impact how long this takes.

Unfortunately, that also means they can all impact how long it takes for it to get out of your system. There are some generally accepted averages for each type of drug test that are listed below.

How Long is THC Detectable in a Drug Test?

According to research gathered by, the amount of time that THC is detectable depends on the type of test being administered.

Urine testing

  • Occasional users (up to three times a week): 3 days
  • Moderate users (four times a week): 5 to 7 days
  • Regular users (daily): 10 to 15 days
  • Heavy users (multiple times a day): more than 30 days

Blood testing

  • Up to 25 days

Saliva testing

  • Occasional users: 1 to 3 days
  • Heavy users: 1 to 29 days

Hair testing

  • Up to 90 days

Can You Do Anything to Get THC Out of Your System Quicker?

Based on suggestions that we’ve heard from users, drinking lots of water, exercising, and eating healthy may help speed up the process. But ultimately, the amount of time that it takes to leave your system is based on various factors that are specific to the individual.

There are “cleanse” and “detox” kits available that may also help. But there are no guarantees offered with these either.

If you test positive on a drug test, you can always ask for a retest. You can also talk to your doctor or employer about your use of hemp-derived CBD oil products that may have triggered the positive test.

Summary – How Long Does CBD Oil Stay in Your System?

While hemp-derived CBD products contain only trace amounts of THC, they still carry a risk associated with drug testing. If you are willing to accept that risk, knowing how long it can stay in your system can help you better prepare for drug tests if you know when they’re happening.

It’s important to remember that everyone is different. While one person may take a product and claim they have never tested positive, you could potentially experience the exact opposite. There are no guarantees with any CBD product when it comes to drug testing, but being informed could save you from the unwanted consequences of a positive test.


Will CBD Oil Make You Fail a Drug Test?

Sarah Jorczyk

Sarah Jorczyk is an advocate for CBD products and one of the Administrators of the CBD Oil Users Group on Facebook. She strives to educate the public, and promotes the use of safe products while helping others throughout their CBD journey. You can also find a variety of her content, including reviews and educational videos, on the group's youtube page.

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