Does CBD Show Up Test? Hemp, Trace THC, Test Type, More (CBD Gummies, CBD Oil)

Is this possible?

Cannabidiol (CBD), should not be detected in a drug test.

However, many CBD products contain trace amounts of delta-9-tetrahydrocannabinol (THC), marijuana’s main active ingredient. THC will be detected on drug tests if it is high enough.

In rare cases, CBD may result in a positive drug test. All depends on the product’s composition and quality. Continue reading to find out how to avoid positive drug tests, what CBD products to look for, and other useful information.

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What does it mean that certain CBD products may contain THC?

The FDA doesn’t regulate most CBD products. It’s therefore difficult to determine what is in these CBD products, even if they are legal in your area.

THC contamination can be made more likely by factors such as the origin of the CBD extract and how it was harvested. Some CBD types are more likely to contain THC than others.

What is the difference between CBD and other types?

CBD is a compound that comes from cannabis plants, which are a part of the Cannabis family. There are hundreds of naturally occurring compounds in cannabis plants, including:

  • Cannabinoids
  • Terpenes
  • flavonoids

The variety and the strain of plants can affect their chemical composition.

While both marijuana and hemp products can be derived from cannabis plants in equal amounts, they have different levels of THC. THC is a common component of marijuana plants. THC is the main ingredient in marijuana that produces the high associated with vaping or smoking marijuana.

Contrary, hemp-derived products must contain less than 0.3% THC content. Hemp-derived CBD has a lower likelihood of containing THC than marijuana CBD.

The plant variety is not the only thing that matters. Refinement and harvesting techniques can also affect the composition of CBD.

CBD extracts are often labelled as one or more of the following types.

Full-spectrum CBD

CBD extracts with full-spectrum CBD contain all the compounds found naturally in the plants they were extracted from.

Full-spectrum products also include CBD, terpenes and flavonoids as well as other cannabinoids like THC.

CBD products that are full-spectrum can be extracted from marijuana subspecies.

Full-spectrum cannabis-derived CBD oil could contain different amounts of THC.

The legal limit for full-spectrum CBD oil derived from hemp is 0.3 percent.

Manufacturers don’t always disclose the source of their full-spectrum extracts, making it difficult to determine how much THC is in a product.

Full-spectrum CBD products are widely available. There are many products available, including oils, tinctures and edibles as well as topical creams or serums.

Broad-spectrum CBD

Broad-spectrum CBD products are similar to full-spectrum CBD. They contain additional compounds from the plant, such as terpenes or other cannabinoids.

Broad-spectrum CBD is free of THC.

This is why broad-spectrum CBD products have a lower likelihood of containing THC than full spectrum CBD products.

This form of CBD is not widely available. This type of CBD is most commonly sold as an oil.

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CBD isolate

CBD isolate is 100% pure CBD. It does not contain any additional compounds from the plants it was taken from.

CBD isolate is typically derived from hemp plants. CBD isolates made from hemp should not contain THC.

This CBD can sometimes be sold in a powder form or as a small, solid slab that can be cut apart and eaten. You can also purchase it as an oil or tincture.

What amount of THC is required to register for a drug test?

Drug tests are used to screen for THC and one of its main metabolites THC-COOH.

Mayo Clinic Proceedings, 2017 states that federal workplace drug testing cutoff values were set to prevent trace amounts of THC and THC-COOH from triggering a positive test.

Also, just because you pass a drug test does not mean there is no THC or THCCOOH in your system.

A negative drug test instead indicates that there is less THC or THCCOOH than the cut-off.

As you can see, different testing methods have different detection windows and cut-off values.


It is not uncommon to have your urine tested for cannabis, especially at work.

To trigger a positive test, THC-COOH must exist in urine at a level of 50 Nanograms per Milliliter. A nanogram is one-billionth the size of a gram.

The dose and frequency of use can affect the detection window. THC metabolites can be detected in urine for between 3 and 15 days after their use.

However, heavier and more frequent cannabis use can result in longer detection windows, sometimes exceeding 30 days.


Because blood tests are less frequent than urine tests for drug screening and therefore more common, they are unlikely to be used in workplace testing. Because THC is rapidly eliminated from the bloodstream, this is why it is so rare for blood tests to be used for workplace testing.

Although it is only detectable in plasma for a maximum of five hours, THC metabolites can be detected for up to seven days.

For example, blood tests can be used to determine current impairment in cases where someone is driving while impaired.

A blood level of THC above 1 or 2 ng/mL in states that legalize cannabis indicates impairment. Others have zero tolerance policies.


Currently saliva testing is not common and there aren’t any established cut-offs for THC detection in saliva.

A set of 2017 recommendations published in the Journal of Medical Toxicology suggest a cut-off value of 4 ng/mL.

THC can be detected in oral fluids for approximately 72 hours. However, it may be detectable longer if there is a lot of chronic heavy use.

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Hair testing is not common and there are no cut-offs for THC metabolites in hair.

Private industry cut-offs include 1 picogram for every milligram (pg/mg), of THC-COOH. Picograms are approximately one-trillionths of a gram.

Hair can be detected for up to 90-days with THC metabolites.

What else could CBD use lead to a positive THC test?

CBD may lead to positive drug tests for a variety of reasons.


Even though THC is only in trace amounts, there is still the possibility of cross-contamination.

Manufacturers who prepare products with CBD or THC alone, or both, may be at greater risk of cross-contamination.

Both at home and in stores, it is the same. Cross-contamination is possible if CBD oil is in close proximity to other THC-containing substances.

THC second hand exposure

It’s very unlikely that you will receive a positive result from a drug test after secondhand marijuana use, but it is possible.

According to some research, the amount of THC that you inhale from secondhand smoke will depend on its potency and the area’s size and ventilation.

Product mislabeling

CBD products are not always regulated. This means that they don’t usually have third-party testing to verify their composition.

A 2017 study from the Netherlands assessed the accuracy of labels on 84 CBD-only items purchased online. THC was detected in 18 of the tested products.

This suggests that mislabeling of products is quite common in the industry. However, more research is needed to confirm this for American CBD products.

Does CBD convert to THC in the body?

CBD can become THC in acidic environments.

Some sources suggest that this chemical transformation occurs also in the human stomach, which is an acidic environment.

A 2016 In-vitro Study found that CBD can be transformed into THC using simulated gastric fluid.

A 2017 review found that in-vitro conditions are not representative of the actual conditions in a person’s stomach. There, similar transformations don’t seem to occur.

In the 2017 review, researchers also noted that CBD side effects have not been reported in clinical studies as reliable as those of THC.

How do you ensure that CBD products don’t contain THC.

Some CBD products might be more safe than others. It is important to carefully evaluate all CBD products before you decide to use them.

Check out the information about the product

Determine if the product is made from hemp or marijuana. Next, determine whether the CBD product is full-spectrum or broad-spectrum.

CBD products made from marijuana and full-spectrum CBD products made from hemp are more likely than CBD products made from cannabis.

It should be easy to find this information. It could be an indication of a less reliable manufacturer if it is not included in the product description.

Look for CBD-rich products.

It is a smart idea to determine the CBD concentration per dose.

It is possible for the price to vary depending on whether the product you are using is oil, tincture or edible.

Concentrated CBD products can be more expensive than others, even though they appear smaller or the same size as other products.

Start with a low-dose, if possible.

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Learn where CBD-derived hemp products are made

The quality of hemp depends on the state. Colorado and Oregon are more reputable states with long-standing hemp industries that follow strict testing guidelines. Contact the seller if you don’t find information about hemp in the product description.

Do your research

You should pay attention to certain terms when evaluating a product.

  • USDA-certified organic
  • CO2-extracted
  • solvent-free
  • decarboxylated
  • Pesticide-free or herbicide-free
  • no additives
  • no preservatives
  • solvent-free
  • lab-tested

In many cases, however, it may be difficult to prove these claims. It is best to search for lab results that are associated with a manufacturer.

Avoid products that make health-related statements

Epidiolex is an epilepsy medication. Epidiolex can only be purchased by prescription.

Other CBD products have not been subject to FDA testing to determine their safety and effectiveness in treating certain health conditions, such as headaches or anxiety.

Sellers are not allowed to make CBD-related claims. Those who do so are in violation of the law.

Pure CBD will not register on standard drug tests.

Routine drug tests do not screen for CBD. They usually detect THC or one of its metabolites.

A person ordering a drug test might request that CBD be added to the list. This is not likely, especially in states that CBD is legal.

The bottom line

A routine drug test should not show CBD.

Keep in mind, however, that CBD products aren’t always regulated and it can be difficult to know exactly what you’re getting. You can avoid THC by purchasing CBD isolate from a .

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