5 Life-Changing Hacks on How to Pass a Mouth Swab Drug Test

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The last thing anyone would want after a fabulous time is to be surprised with a mouth swab drug test. These tests come with no warning. Most of the time, they are either required by companies or mandated by different institutions. Of course, a drug test certainly is not the type of test you’d want to fail. With that being said, here are 5 hacks on how to pass a mouth swab drug test and everything you must know about it:

What is a Mouth Swab Drug Test?

A mouth swab drug test is used to examine and detect any signs of possible substance use. It’s primarily implemented for job screenings or roadside examinations that disallow people under the influence of substance use. This drug test is done by placing a sterile swab between the cheeks, moving to the corners inside the mouth, and letting it stay. Swabs are put to rest inside a person’s mouth for about 3 to 5 minutes.

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How Do Mouth Swab Drug Tests Work?

If you noticed it too, mouth swab drug tests or mouth swab tests, in general, are gaining popularity nowadays. There’s actually a reason for this. Recently, it has been found that mouth swabs are more effective, non-invasive, easier to do, and faster to process.

In a single mouth swab, different biological materials are easily analyzed. Because of this, experts can easily spot information regarding any existing foreign substance. Mouth swab drug tests are usually geared towards detecting Tetrahydrocannabinol (THC) present in cannabis products that induce euphoria.

This is how people can spot someone who has recently engaged in drug use. We obviously don’t want that. So, the following are answers to questions most people have regarding mouth swab drug tests:

  • Is it legal for authorities to conduct mouth swab drug tests? Or is it legal for private institutions to mandate this type of test?

Yes. Most states and countries allow drug tests to be conducted. In the case of private institutions, they are also given authority to request this, especially if you’re an employee or an official. However, some drug tests are mandated by the local government, so you’re left obliged to comply.

  • Until what duration can mouth swab drug tests detect?

Generally, the detection window for bodily fluids like saliva, blood, and urine is about 5 to 48 hours. However, if you’re someone who’s exposed to the substance for a long time, this might not apply to you. This is because the longer your body receives drugs, the more these substances will linger inside.

So, if you’re someone who thinks that they’ve been consuming substance more than the average, then please don’t risk it because there’s a high chance your body fluids can show positive results.

  • How long do mouth swab drug tests last?

If the test is conducted through a laboratory, the results will come out after 24 hours. However, suppose it’s done using testing kits or on-site substance detectors (like the ones used by police officers on spontaneous road tests). In that case, it can give a result after a few minutes.

  • Are mouth swab tests accurate?

Yes, they are very accurate. In fact, the percentage of accuracy these tests have is 98%, which clearly is “very” correct.

  • What kind of drugs can mouth swab drug tests detect?

As a general rule, mouth swabs can detect any foreign substance within the human body. So, it’s most likely capable of detecting different substance variations and classifications. If you’re asking about how long drug substances can stay within your body, please refer to the table below:


Testing Time:

Detection or Identification Rate:



    Methamphetamine (“Meth”)


It can be detected in 10 minutes after the test is conducted.



Meth is identifiable for around 4 days for frequent users. This duration can be lessened for light users.





Marijuana (“Weed”)




Results can be confirmed after 1 to 4 hours.


This can linger in the body for about 4 to 6 weeks. Specifically for mouth swabs, a person can be tested positive up to 34-48 hours after recent use.




Cocaine (“Crack”)



This can be detected within a few hours after taking the test.


Cocaine stays inside the body for about 1 to 4 days. However, it can remain for up to a couple of weeks for frequent users.





Benzodiazepines (“Benzos”)


This depends on what metabolites are being tested. However, it’s estimated to take about 2 to 8 hours.



Depending on the variation, it can be detectable for about 5 to 10 days after substance use.



MDMA (“Molly”)



Results can be detected after a few minutes to an hour.


MDMA is more short-lived compared to other substances. Most detectable traces will be gone after or within 24 hours.




Heroin and Other Opiates


Unlike other substances, the testing time is uncertain. It usually varies depending on the present components inside a person’s body.


The most occurring time frame for heroin is said to take two hours. But, again, this doesn’t apply to everybody.




Generally, opiates are traceable for 24 to 36 hours in the saliva.


The information presented above is based on the current findings we have about substance retention. However, it’s crucial to remember that these depend on your health condition, frequency of substance use, weight, and the substance itself. If you’re expected to take a drug test, make sure to take measurements long before the day of the test if you don’t want to fail it.

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Ways on How to Pass a Mouth Swab Drug Test:

As a disclaimer, the information presented in this article doesn’t tolerate or encourage any forms of deceit, especially in professional and legal practices. Always remember that using the tips below in a court-ordered drug test is punishable by the law. The information below is a mere presentation of the different ways to pass a mouth swab test.

Now that the basics are out of the way, we now proceed to the central question of how anyone can pass mouth swab drug tests. From different accounts of people who tried and succeeded to push their way out of a failed test, here’s everything you’d like to know about saliva tests:  

  • Is it possible for me to get out of a mouth swab drug test?

In some cases, yes, and in others, no. As of today, there’s still isn’t an absolute solution for this matter. However, some ways helped other people to escape the situation successfully. But remember that the frequency of your consumption plays a significant role in the result. As much as possible, don’t consume heavy amounts of substance before a test (if you’re lucky enough to be informed ahead of time.)

  • What are the ways on how to pass a mouth swab drug test?

We now proceed to answer the big question. What you want to do is dilute the presence of substance inside your mouth and your body. Although these solutions lack research, below are some ways people managed to weaken drug presence in their body:

Hydrogen Peroxide

Hydrogen peroxide is an adulterant many people recommend for passing the swab test. This disinfectant is believed to remove traces of substance within a few hours instantly. Basically, you use this as a mouthwash.

Gargle it and let it swish inside your mouth for 30 seconds. Then, rinse your mouth again with water. You can do this days or hours before the test. Some even announce their success after trying this method only minutes away from the test. It’s expected to be strong enough to remove any foreign substance in your mouth.

But remember, hydrogen peroxide isn’t something to be taken casually. It’s a powerful substance. So, it’s recommended that you try this method with hydrogen peroxide that only has a 3% concentration level. Going beyond this level can damage your tissues so, make sure to stick to 3%.

Be careful not to ingest it as it can damage your internal organs. Don’t let it stay inside your mouth for too long too, always be careful when using hydrogen peroxide.


Vinegar is known to help people pass the hair follicle test. So, other people decided to try it for saliva-based drug tests. Surprisingly, others have reported success in using vinegar. Those who advocate this method suggest vinegar specifically for people who recently consumed THC found in cannabis products.

How this works is that it can allegedly burn down fat and speed metabolism. This is important since cannabis substances like THC are stored in fat. People who tried this method recommend apple cider vinegar and balsamic vinegar.

As a reminder, there isn’t a scientific basis for this claim. So, manage your expectations when trying this method.

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Toothpaste and Mouthwash

Other users claim that the classic brushing and gargling with regular mouthwash does the trick. This method is recommended for those who haven’t consumed heavy amounts of substances. Brushing more intensely than usual can help decrease drug traces lingering inside the mouth. It’s recommended for light users because it doesn’t do anything on an internal level.

Advocates of this method recommend gargling every 15 minutes within a 4 to 5-hour window. It’s also recommended to gargle for about 20 to 30 seconds. Areas that demand more focus in brushing include the cheek walls, tongue, and spaces between the teeth. As extreme as this may sound, others are confident that it can dilute short-lived drug presence inside the mouth.

Chewing Gum and Sour Candies

As odd as this sounds, it worked for some people! Chewing gum can increase your saliva rate due to the chewing that’s required. It makes sense, right? This process is found to have the ability to dilute any present concentration within the mouth. The recommended flavors are cinnamon or citrus ones since they’re usually more robust than other flavors.

For sour candies, it can naturally make saliva more acidic. This is a good thing because the more sugary and acidic saliva gets, the harder it is to trace drug substances. So, it’s advised to eat 2 to 3 sour candies hours before the drug test. Again, these claims have no solid scientific basis, so make sure to incorporate these at your own risk.

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The Best Way to Succeed in Mouth Swab Drug Tests

Surprise, surprise! While all the mentioned tips are known to work for many people, there’s a failproof way to succeed in mouth swab drug tests. And this is no other than detoxifying your body through a tolerance break. No, you don’t need to buy expensive tea or some magical antidote that can take out the drugs in your body.

What this means is to take some time before consuming drugs again. It’s better to prevent these situations from arising so you’ll save yourself from panic. If you feel like a test is bound to be conducted in your workplace, take 2 to 3 days off. Detoxifying your body won’t take much time (depending on your consumption frequency). It’s better to dodge a failed result than to overwhelm your mouth and mind!

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