What prevents cautious individuals from trying CBD begins with general public confusion as to whether or not CBD is actually legal in Idaho. (In short, CBD is legal in Idaho).

Three Idaho drug testing labs confirm they don’t actually test for CBD. Drug testing labs only screen for THC. This means they don’t test for CBD in your urine, hair, or blood. Caution, several CBD products can make you test positive for THC. A label saying THC-FREE or zero-THC can be wrong.

Below, we’ll look at our favorite CBD brand (Medterra) and a specific CBD product we trust and love (Ultra-Broad Spectrum – check pricing)

We’ll also be looking at several sources confirming that you won’t fail a drug test because of CBD.

Furthermore, we’ll explore what types of CBD products will make you fail a drug test and how to best avoid choosing CBD products that are both illegal and that could make you test positive for THC and fail your drug test.

Can You Fail A Drug Test Due To CBD?

Failing a drug test could mean losing your job, not getting a job, going back to jail, or your doctors stopping all treatment.

  • CBD will not make you fail a drug test.
  • Only THC can make you fail a drug test because the drug testing labs only screen for various levels of THC.

Drug testing labs offer cheap take-home rapid THC screening test kits you can buy from them if you want to try different products and see what the results produce to be absolutely sure.

After understanding, Idaho CBD law states CBD products are legal if there’s no detectable amounts of THC (0.00000% THC).

Since Idaho law says CBD is legal if there are no detectable amounts of THC (not even trace amounts), the only other real concern is wondering if your CBD oil actually has no detectable amounts of THC.

Failing an important drug test because a label said it was THC-FREE or ZERO-THC doesn’t make the manufacturer liable.

You are ultimately responsible for if you want to add CBD to your routine.

In order to feel 100% comfortable and absolutely certain your CBD product is completely clean of THC, you need to look at the Certificate Of Analysis (COA) your CBD brand should have available for you to review and verify there’s no THC in the product you’re about to purchase and use on a regular basis – with doctor approval.

Furthermore, if your doctor didn’t mention this, you need to be aware that CBD interacts with certain medications.

Learn more: CBD Drug Interactions With Prescription Medication, Vitamins, OTC Meds, & Any Other Supplement

With several sources (MD, Pharm.D., & drug testing labs) saying drug tests don’t screen for CBD – it must be true.

  • According to a Healthline article, CBD should not show up on a drug test.
  • Drugs.com also echoes that CBD shouldn’t show on a drug test.
  • Medical News Today confirms drug tests don’t screen for CBD.

The only cannabis or hemp based molecule drug testing labs look for is the THC molecule and most all other variations (isomers) of THC.

THC isomers that can cause you to fail a drug test include.

  • D9-THC
  • THCA
  • THCV
  • D8-THC
  • D10THC
  • D9-THCP
  • And potentially many more including synthetic THC

** Make sure your looking at the certificate of analysis of the CBD product you’re about to purchase to verify there’s No Detectable (ND) amounts of THC that’s both illegal in Idaho and could also make you fail a drug test. **


Some CBD products can make you fail a drug test.

The most common type of CBD products that could make you test positive for THC are the full-spectrum CBD products.

Full-spectrum CBD products are allowed to have up to 0.3% THC, but no more.

Idaho law doesn’t allow CBD products with any amounts of THC.

This makes all full-spectrum products illegal in Idaho.

Since full-spectrum CBD products can contain up to 0.3% THC, this small amount can cause you to a failed drug test by testing positive for THC.

To avoid failing a drug test, it’s recommended you do “not” take a full-spectrum CBD product.

Full-spectrum CBD products have the illegal THC molecule drug tests are looking for.

Even though drug tests mostly only look for THC, broad-spectrum CBD products do “not” contain THC quantities.

Few CBD companies offer true broad-spec CBD products, while also verifying there are no detectable amounts of THC.

To verify zero THC, ISO 17025 Accredited lab testing facilities provide a Certificate Of Analysis (COA) with every batch.

The proper COA provides information verifying there’s zero THC and much more.

The ISO 17025 accreditation is an international testing standard qualification demonstrating operational competence in generating valid results.

Below, we’ll go into more extensive detail on how drug testing is performed and other ancillary questions the help you feel more comfortable in adding CBD to your routine.

What Did The Idaho Drug Testing Labs Say About Testing For CBD?

After emailing about a dozen different drug testing labs in Idaho, only two responded to my inquiry.

Here are the responses, name, and contact information of the person responding for if you have more follow up questions that I might have missed that you’d like to ask them.

If you do contact them and receive more information that I don’t have published, I ask that you please reach out and inform me of any information that I might need to update to reflect potential lab testing standards or updates.

Initial email of questions to Idaho drug testing laboratories.

Curious if you drug test for CBD (cannabidiol)? Can I fail a drug test for CBD only?

I’m looking at the COA for this CBD product.

And, it says ND for D9-THC, THCA, THCV, D8-THC, D10THC, D9-THCP, etc.

Curious what cannabinoids you drug test for? Will any “non” THC isomer cause a positive drug test for a THC metabolite?

Also, if I do for some reason end up testing positive, is there a more specific drug test that verifies I have no THC in my system?

United Drug Testing Laboratories, Inc.
Debbie Brice
Very rarely you will find a CBD product that will cause a positive for THC. The ones that do cause a positive are just contaminated batches. New regulations have almost eliminated this possibility. I would however stay away from Delta 8 products. Those can cause a positive.

American Diagnostics
“With CBD oils it all depends on the manufacturer and if they test to be sure there are no or low levels of THC within the product. We have had positive results where the donor “said” it was the only thing they have used. We have take-home THC rapid screens that you could test yourself to if you’re trying different products to see what happens. But we also have lab screens that will test for different levels of THC.”

I also called up a local drug testing lab and audio recorded my conversation with the office worker that collects the sample (who will remain anonymous) and knew quite a bit about some specifics in how you might want to proceed with taking CBD.

The first question I asked was if they tested for CBD, but I think he was a little confused and thought I might have meant THC to which he responded that they do THC tests.

I understand that there’s still a lot of confusion around CBD, this is the purpose of going through the process of actually getting to the bottom of the truth while making critical distinctions to the accuracy of the information we’re seeking.

Next, I asked him if I were to take a 100% CBD product that has no detectable amounts of THC (verified by a COA), he also was a bit confused.

Throughout our conversation, he acknowledges that it can be risky to take a CBD oil from a low quality untrusted brand that doesn’t lab test their products to verify there’s absolutely no detectable amounts of THC.

CBD products on Amazon will not tell you or show you a COA of the exact cannabinoids, gas station brands are probably high risk, and any full spectrum CBD product can cause you to potentially test positive to THC.

One excellent piece of information the sample collection worker provided was to buy a THC testing kit directly from the drug testing lab for $10, and not a grocery store test because CVS tests aren’t as sensitive as the THC testing kit you can get from an actual drug testing lab.

Buying a THC testing kit directly from a drug testing lab will be able to test for lower levels of THC in your system and provide you with more accurate results.

The only incorrect thing the sample collector said that was false was that CBD is made from THC.

CBD is not made from THC.

Both CBD and THC are two separate distinct cannabinoid molecules.

While both CBD and THC come from the same cannabis or hemp plant, there is a 100% difference between the two.

CBD is legal worldwide, Olympic athletes are allowed to use it, etc.

Furthermore, science has identified approximately 113 different cannabinoids and the only illegal cannabinoid is THC plus any variation of THC.

THC is the only cannabinoid molecule that will get you high and cause a psychoactive intoxicating effect.

Whereas, CBD is legal and does not get you high, nor does CBD give you any psychoactive intoxicating effect.

In this video, the Director Of Science & Technology at Quest Diagnostics, Dr. Barry Sample, tells us CBD itself would “not” be confused with either THC or THC metabolite. Dr. Sample continues saying, “Analytically, we can clearly differentiate the two substances.”

Does CBD oil have THC in it?

Full-spectrum CBD oil is the only type of hemp CBD oil to have THC in it. Even though President Trump legalized hemp, the federal law still allows up to 0.3% THC to be present in most CBD products.

Idaho law is more strict and says hemp CBD products can “not” have any quantities of THC present. If there’s even trace detectable amounts of THC in Idaho CBD oil, Idaho law says it’s illegal marijuana.

There are some CBD products that have zero THC and the best type of CBD is broad-spectrum.

Does broad-spectrum CBD show up on a drug test?

According to Drugs.com, the primary concern is the psychoactive THC (tetrahydrocannabinol) molecule. 

Broad-spectrum CBD products do “not” have any of the four types of THC (D9-THC, D8-THC, THCa, & THCv), therefore, a standard drug test will not look for or detect any other cannabinoid besides the THC molecule.

What is broad-spectrum CBD?

There are three types of CBD products including full, broad, and isolate. 

Idaho residents only really need to completely stay away from full-spectrum CBD products.

The primary reason to avoid full-spectrum CBD products is that federal law allows there to be up to 0.3% THC. Whereas Idaho law states there can be no detectable amounts of THC.

CBD isolate products only contain purified CBD powder.

The main problem with CBD isolate products is they have to overcome the bell-shaped dose-response curve.

This curve essentially means CBD isolate products require a very precise dose to even get a minimal effect.

If you’re looking for a more effective CBD product, you won’t find much benefit in a CBD isolate product.

Broad-spectrum CBD products are the best for Idaho residents.

A good broad-spectrum CBD product will have more than just the CBD molecule and can contain more than 100 different cannabinoids.

The more variety of different cannabinoids, the better.

With a wide range of cannabinoids, you get the added benefit of the entourage effect.

The entourage effect simply means having a wider range of cannabinoids makes each other cannabinoid work better because they’re interacting with each other to produce a powerful synergistic response.


How to detect CBD in the human body?

Drugs.com reveals several biological specimens can be used to test for the presence of drugs.

Specimens can include urine, hair, blood, saliva, sweat, toe & fingernails, meconium (stool).

Most drug testing use urine due to the non-invasive nature and the ease of collecting a sample.

Urine will typically have higher concentrations as well as being present for a longer duration.

When testing for specific drugs, the test will either look for the parent drug or one of the metabolites (byproducts).

Two primary urine drug tests are either screening or confirmation testing.

All types look to detect the actual presence of certain specific drug metabolite or a class.

The unfortunate part of these antibody tests is that drugs with similar characteristics might get detected and results in a false-positive.

Pain management clinics typically favor using a form of visual test that displays drug testing results with different colors.

These types of tests are open to interpretation, due to the potential difficulty to read certain faint or uncertain colors.

Drugs.com continues explaining how this visual test should “only” be a type of preliminary test and should require a confirmatory laboratory drug test to verify the initial results.

Best practices state a much more specific confirmatory test should be conducted following a potentially false-positive initial visual color screening test.

Final confirmatory drug testing utilizes an advanced gas chromatography or mass spectrometry technology.

This advanced drug testing equipment is able to identify precise molecule structures and the specific quantities of drugs currently in the sample.

Confirmatory drug tests are most accurate than the initial screening tests, however, the advanced drug testing has a higher cost and takes a lot more time to complete.

This advanced test is typically reserved for more significant drug testing requirements for academia, legal, forensic, or certain employment situations. 

Gas chromatography and mass spectrometry are able to detect specific cannabinoids and can distinguish the difference between the CBD and THC molecule.

How long does CBD stay in the body?

How long CBD can stay in your body can depend on several factors. Factors can include how much CBD you took, the method you took it, body size, other drugs your taking, etc.

According to Healthline, the effects of CBD can last between 2 – 6 hours. And CBD can stay in your system for 2 – 5 days, more or less, depending on several factors.

How long is CBD detectable in blood?

The medical journal Pharmacology, Biochemistry, and Behavior says the CBD is virtually undetectable — in blood plasma — after one week of discontinuing use.

In this study, participants took approximately 700 mg of CBD per day for six weeks. They tested participants using gas chromatography-mass spectroscopy and other specifics. 

In general, CBD stays in your system.

  • Saliva, only a few hours
  • Blood, up to a week
  • Urine, a few weeks

Another study published in the Frontiers In Pharmacology looked at ten different publications and found the half-life (elimination) of CBD ranged between one hour to five days.

Depending on how the CBD was administered and the dosage determined how long CBD stayed in your system.


Does CBD show up on a 10-panel drug screen?

There are several different types of drug panel tests that can test for one drug and up to 20 or more types of drugs.

Most employers utilize some form of initial screening test and won’t typically have you take a confirmatory drug test with the advanced gas chromatography or mass spectrometry. 

A 20-panel urine drug test, tests for a wide range of drugs, including THC, but, not specifically CBD.

Can CBD trigger a false positive drug test?

Most, if not all, common drug tests are looking for the THC metabolite. Upon scouring the internet, I couldn’t find a specific drug test that looks for CBD.

The federal workplace limit of THC you can have in your system — for an immunoassay screening test — is 50 nanograms (ng) per milliliter of urine (one ng is one-billionth of a gram).

With a more specific confirmatory test, a positive result will occur if you have more than 15 ng/mL.

Can you fight a false positive drug test?

The only way to fight a potentially false-positive drug test is to request additional testing to confirm the initial drug screening test.

There are a handful of things that could potentially cause a false positive drug test. One bizarre example was newborns testing positive for THC due to common baby soaps. 

A false-positive drug test needs to be properly confirmed utilizing Gas Chromatography-Mass Spectrometry and/or High-Performance Liquid Chromatography testing.