Despite the fact that legal weed is gaining significant traction, that doesn’t mean employees aren’t still stuck dealing with drug tests on the regular. Saliva tests are fairly new and very different from the standard urine drug test. Some believe they’re more accurate, but others say they’re much easier to pass. Either way, it’s a quick, cheap, and easy testing method, so you can expect to see more of it in the workplace. That’s why it’s more important than ever to know how these tests work and what you can do to minimise your chances of failing.


One of the most notable differences between saliva drug tests and the standard urine test is that each of these methods tests for different compounds in the body. Urine tests look for 11-Nor-9-carboxy-Δ9-tetrahydrocannabinol (THC-COOH), a metabolite that’s produced when Δ9-tetrahydrocannabinol (THC) is broken down in the body. Depending on your body type, THC-COOH can be found over 30 days after consumption.

A saliva test, however, screens for the THC itself, or Δ9-tetrahydrocannabinol. After you smoke, THC lines the inside of your mouth before it has a chance to be metabolised by the body. Supporters of this testing method believe it’s more accurate, but many have found ways to skirt through their screening. The accuracy of drug tests in general is a hotly contested topic.

Thc Drug Test Report


For the most part, saliva tests can detect THC for about 24 hours after the last time you smoked. That’s not always 100% though. There are certain tests that can find THC in your saliva up to 72 hours later, and some that claim to be able to work up to 1 week after consumption.

So, if you’re a heavy smoker, you may want to refrain from smoking for about a week before your test, just to be on the safe side. If you only smoke occasionally, 3 days should suffice to get you a nice, clean saliva test. If you happen to get surprised with a random drug test by an employer or police officer, let’s hope the odds are in your favour.


Thankfully, cannabidiol (CBD) is not even being tested for in the United States or Europe since it’s a non-psychoactive component. There is currently no standard for measuring quantities of CBD in the body. Furthermore, hemp-based CBD products available on the market should legally have no more than 0.3% THC in them anyway. So it would be very unlikely for a drug test to detect THC in your system if you are solely a CBD user.

If you’re smoking a high-CBD strain though, the amount of THC in those varieties varies greatly. Depending on how much you smoke (along with many other considerations), it’s possible to fail a THC urine test, and possibly a saliva one as well. There simply aren’t enough studies or anecdotal trials available yet to know for sure.

Drug Detection Test THC in Urine


There are many factors you have to think about when taking a drug test. You’ll have to consider the cut-off guidelines of the specific test, your body mass, age, metabolic rate, and level of physical activity, your overall health, how much you smoked and how long ago, the potency of the strain, and your hydration level.

For example, since THC is stored in lipid cells of the human body, a person who is overweight and smokes regularly would need much longer to clear their system than someone who’s lean and only smokes occasionally. Exercise is another big factor. A study showed that THC levels (in urine) were considerably lower when tested immediately after exercise.

Now, let’s focus on those cut-off rates that were mentioned earlier. In the United States, most employers adhere to the Substance Abuse and Mental Health Services Administration (SAMHSA) guidelines and cut-off levels of drug testing. This means that a typical urine test would use a cut-off of 50ng/ml for THC-COOH in the body. Unfortunately, there is no cut-off level for the saliva test since it is so new. Only time, plus a little bit of trial and error, will result in standards for this testing method.


There is no foolproof way to cheat a drug test, but there are different methods that work for different people. So trying at least one, or maybe a combination of suggestions, can help you too. If you have a planned test coming up, the first thing you should do is quit smoking. It’s also helpful to brush your teeth diligently, three times a day, for a couple days beforehand, while paying extra close attention to the gums, cheeks, and tongue. Also, stay hydrated; that’s good for you regardless of whether you have an upcoming drug test or not.

If you’re short on time, try eating a decent-sized meal of high-fat foods. Remember, fat cells absorb and store THC. Then, shortly before your test, you could try rinsing your mouth out with lemon juice, vinegar, or a hydrogen peroxide solution (0.3%). There are also commercial products you can buy to mask the THC in your saliva, but these only work for 30 minutes maximum. Hopefully, that’s all the time you need, but it’s definitely something worth noting.

Diet to Detoxify the Body of THC


Even though these new saliva tests are somewhat uncharted territory, you can rest assured that they’re easier to pass than your standard urine test. And since these tests are still woefully unreliable, it’s possible that you could pass a saliva screening just hours after you smoked (yes, it has happened before). If you do happen to fail, you might even be able to negotiate a retest on the grounds that this method is still not very regulated.

Have you encountered a saliva test, either for employment or at a police checkpoint? How did it work out? We’d love to hear from you!

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