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Will CBD Oil Make Me Fail a Drug Test?

Will CBD Oil Make Me Fail a Drug Test?

One of the most frequently asked questions when it comes to taking CBD oil is, “Will it make me fail a drug test?”

Today most people are at least somewhat familiar with the benefits of CBD oil, but there is still that fear that they could fail an employer mandated drug test. Trust me, no one wants to lose their job and income no matter how positive the benefits are.

Spoiler alert: Will taking CBD oil make me fail a drug test?

The short answer is while it’s rare, it is possible.  Let me explain.

It depends on many factors including, but not limited to:

  • how much and how often cannabis is used
  • the metabolism of individual being tested
  • the route of administration
  • other factors such as medications used, liver or kidney disease, etc.

Most employers test for 5 drugs

The 5 drugs most employers test for are called the NIDA 5. NIDA is short for National Institute on Drug Abuse.

The NIDA 5 are as follows:

  • Phencyclidine (PCP)
  • Cocaine (cocaine, cocaethylene, benzoylecognine)
  • Opiates (heroin, codeine, morphine, opium)
  • Cannabinoids (marijuana, hashish- tests for the metabolite)
  • Amphetamines (amphetamine, methamphetamines)

Most drug tests look for THC and not CBD

The good news is most drug tests do not care about testing for CBD. But they will check for THC which is the psychoactive ingredient that can get you high.

The rule of thumb is that anything .3% or less is classified as hemp and anything more than .3% is marijuana.

Standard dose users of CBD oil

CBD oil contains a low amount of THC, typically 0.5mg of THC.

Data suggests that someone who uses 3 to 5 normal doses on a daily basis could expect less than a 0.2% chance of failing a drug test.

So again it’s rare, but it is possible.

Extremely high dosage users of 1000 mg to 2000 mg of CBD oil

Those who use 1000 mg to 2000 mg per day could expect to ingest around 3 to 6 mg of THC and data suggests they would have an 11% to 23% drug test failure rate.

Keep in mind 1000 mg of CBD oil would be the equivalent of ingesting 2 full 1 oz/30 ml bottles of HempWorx 500 CBD oil per day and 2000 mg would be the equivalent of ingesting 4 full 1 oz/30 ml bottles of HempWorx 500 CBD oil per day.

Employers may also test for the following drugs:

  • Methadone
  • Barbutuates (pentobarbital, amobarbital, secobarbitol, butalbital, phenobarbital)
  • Methaqualone (qualuudes)
  • Propoxyphene (darvon compounds)
  • Benzodiazephines (tranquilizers-diazepam, valium, librium, ativan, xanax, clonopin, serax, etc.)
  • LSD
  • Inhalents (Benzene, Xylene, Toluene)
  • Hallicinogens (MDE, MDMA, mescaline, MDA, psilocybin)
  • Ethanol (alcohol)

Employers rarely check for the following drugs:

  • Fentanyl
  • Propoxyphene
  • methadone
  • Meperidine (demerol)

The following type of drug tests may be administered:

  • Urine drug testing – Is not as invasive or expensive as a blood test and it can spot recent and occasional use
  • Hair strand drug testing – This test method is viewed as extremely accurate and can detect drug use as far as 6 months ago. This test is also non invasive.
  • Blood Testing – The most accurate way to drug test can also be very expensive.
  • Saliva drug Testing – Saliva tests can spot recent drug use and can’t be cheated.
  • Hair alcohol testing – Hair grow produces fatty substances called markers which are only present when alcohol is in the bloodstream. The more markers the more alcohol.

Drug testing of urine is the most inexpensive and common test that employers use.

The typical drug screen for marijuana use consists of an immunoassay with antibodies that are made to detect it, and its main metabolite, 11-nor-delta9-caboxy-THC (THC-COOH).

Substance Abuse and Mental Health Services Administration (SAMHSA) has set the cutoff level for a positive urine screen in the immunoassay at 50 ng/mL.

When the immunoassay screen is positive at the > 50 ng/mL level, a confirmatory GC/MS (Gas Chromatography/Mass Spectrometry) test is performed to verify the positive urine screen.

The confirmatory GC/MS has a cutoff level of 15 ng/mL and is specific only to the 11-nor-THCCOOH metabolite.

While people tend to focus on whether CBD can make them fail a drug test, they often forget about other common items that could also make you fail a drug test such as:

  • Hemp seeds
  • Azo
  • Sudafed
  • Tonic water
  • Vitamin B supplements
  • Snack bars
  • Amitriptyline. This is a tricyclic antidepressant used for chronic pain, neuropathy (nerve pain), depression, and migraine prevention. Amitriptyline may lead to a false positive urine test for the hallucinogenic drug LSD (lysergic acid diethylamide).
  • Bupropion (generic Wellbutrin). Used as an antidepressant, for weight loss, and smoking cessation, bupropion may lead to a positive screen for amphetamine, methamphetamine, and LSD.
  • Dextromethorphan. Found in RobitussinDelsym and other over-the-counter cough suppressants. If you’ve taken a medication with dextromethorphan in it, your drug screen may be positive for opiates and PCP (phencyclidine).
  • Diltiazem (Cardizem) is used for hypertension (high blood pressure) or to slow your heart rate if you have atrial fibrillation. If you’re taking diltiazem your urine drug screen may test as a false positive for LSD.
  • Diphenhydramine (Benadryl). Many over the counter remedies contain diphenhydramine, an antihistamine also used as a sleep aid, including Tylenol PM and Advil PM. If you’ve taken these, you could test positive for methadone or PCP.
  • Ibuprofen and naproxen (Advil/Motrin and Aleve). Two very common over the counter anti-inflammatory pain medications. If you’ve taken either of these, your urine screen may test positive for barbiturates, THC (cannabinoid), and PCP.
  • Metformin (Glucophage). The most commonly prescribed oral medication for diabetes, taking Metformin may result in a positive test for amphetamine or methamphetamine.
  • Fluoxetine (Prozac) and trazodone. Both are used to treat depression and may result in false positive tests for amphetamine or methamphetamine and LSD.
  • Pseudoephedrine (Sudafed). Used for sinus and nasal congestion, Sudafed—as many of you already know—may result in a false positive test for amphetamine or methamphetamine.
  • Labetalol (Trandate) is both an alpha and beta blocker used for blood pressure control. If you’ve taken labetalol you could have a false positive for amphetamine or methamphetamine and LSD.
  • Methylphenidate (Ritalin). Used for the treatment of ADHD, this Ritalin is a well-known cause of false positive tests for both amphetamine or methamphetamine and LSD.
  • Doxylamine, found in Unisom and other over the counter sleep aids (similar to diphenhydramine), may cause a false positive on a drug test for methadone, opiates, and PCP.
  • Sertraline (Zoloft) is an antidepressant and if you’ve taken it, you may test positive for benzodiazepines and LSD.
  • Tramadol (Ultram) is a non-opioid medication used for pain. Your screen could come up positive for PCP if you’ve taken it recently.
  • Quetiapine (Seroquel) is an atypical antidepressant/antipsychotic used for bipolar disorder, depression, and schizophrenia. Your drug test may show up positive for methadone if you are taking quetiapine.
  • Pain relievers such as Advil, Uprin, Motrin.
  • Menstrual cramp medications like Midol and Trendar.
  • Ibuprofen is known to cause positive for Marijuana.
  • Anti inflammatories such as Naproxyn.
  • Dristan Nasal Spray, Neosynephren, Vicks Nasal Spray, Sudafed.
  • Over the counter appetite suppressants which contain Propanolamine.
  • Common nasal decongestants can cause a positive reading for Amphetamines.
  • Vicks Formula 44M containing Dextromethorphan and Primatene-M containing Perylamine.
  • Demerol, and prescription anti-depressant Elavil test positive for Opiates up to three days.
  • Quinine water can also cause a positive reading for Opiates.
  • Poppy Seeds represent a potentially serious source of falsely positive results in testing Opiate abuse.
  • Nyquil Nighttime Cold Medicine will test positive for Methadone up to two days.
  • Amoxicillin has caused positives for Cocaine.
  • Diazepam tests positive for PCP.
  • Baby soap

If you do test positive on an initial drug screening

Most employers will have a medical officer available to talk to if you fail an initial drug screening.

This is why they ask you what prescription drugs and alternative herbal supplements you may be taking.

If they see something on the list that explains why you may have a false positive you could be in the clear.

If you really haven’t taken anything illegal, then the employer risks a lawsuit by terminating your employment for a having a false positive drug test.

It would be best to talk to a lawyer who specializes in it.

In summary if you are taking CBD oil in normal doses your chance of failing a drug test should be less than 0.2%

However, we always suggest you read our disclosure:

Drug Testing

As indicated on our FAQ page, the HempWorx products utilize a Full Spectrum CBD which may contain trace amounts of naturally occurring THC. We are below the Federal Legal Limit and have less than 0.3% THC by dry weight which you can find the test data on each batch by clicking here. Even though in most cases our CBD products are NOT detectable on a urine or saliva test, we recommend that you check with your Employer or whom it may concern before taking our products.

To order Kentucky grown, organic, non-GMO, hemp CBD oil manufactured at an FDA approved facility or learn about how to make money with our business opportunity, click here to order from