How To Pass A Mouth Swab Drug Test?

One of the most confusing and panic situations is when an employee has to pass the drug test to get the job. If you are an employee who has used some kind of illegal drugs recently then you must be worrying about your drug test. However, now you would think about how to pass a mouth swab drug test to get the right job.

We know all these situations and that is why we have made our post based on the factors about how to pass a saliva test.

This quick guide highlights key tips, but check out the full article to learn comprehensive strategies for passing your mouth swab. Don’t leave it to chance – arm yourself with the right information.

How To Pass A Mouth Swab Drug Test?

Now let’s dive deeper into our topic and see how you can pass the mouth swab drug test with some tricks and tips.

How To Pass A Mouth Swab Drug Test

Sour Candy Trick

Our first trick is to suck on sour candies. Sour candies contain acids like citric acid and malic acid that increase saliva production and dilute any drug metabolites present. 

Swish the sour candy around your mouth and suck on it up until the test to flush your system. Just don’t overdo it – extremely high saliva production could raise suspicion.

Chew Gum

Next, chew gum right before the test. The chewing motion produces more saliva, again helping to water down any traces of drugs. 

Opt for a strong mint gum – the menthol can help remove drug residue clinging to tissues. Peppermint gum works well too. Make sure to use sugar-free gum to avoid tooth decay from frequent chewing.

Brush and Floss

Other tips include brushing your teeth, flossing, and using mouthwash shortly before the test. This helps dislodge particles stuck to oral surfaces. Be gentle though – aggressive brushing can cause bleeding which actually traps drugs.

Rinse with Hydrogen Peroxide

Rinsing your mouth with hydrogen peroxide can be an effective way to help pass a mouth swab drug test. Hydrogen peroxide produces a foaming, bubbling action when it comes in contact with saliva and tissues. 

This oxidative reaction helps break down and flush out any drug metabolites that may be lingering in your mouth.

To use hydrogen peroxide, purchase a 3% solution which is readily available at any drugstore or pharmacy. About 30 minutes before the drug test, take a moderate swig of the peroxide solution. Swish it vigorously around your mouth for about 2 minutes before spitting it out. The bubbling and foaming will help dislodge drug particles and residuals. 

Make sure to get the peroxide into every area of your mouth – under the tongue, along the gums and inner cheeks, and across the surface of your tongue. Be careful not to swallow the peroxide. Repeat the hydrogen peroxide rinse a second time 10 minutes before the test. 

This double rinse helps maximize the cleansing effects. Just don’t overdo the amount of peroxide each time – too much can irritate oral tissues. With this bubbly mouthwash, you improve your chances of passing that saliva drug test.

Brush Twice a Day

In the days leading up to the drug test, be diligent about your oral hygiene. Brush your teeth at least twice daily using a soft-bristled brush. Brushing helps remove drug residue that may be clinging to surfaces inside your mouth.

Drink Plenty of Water

Stay well hydrated by drinking plenty of water the day before and the day of the test. Water helps dilute saliva and flush your system. Avoid alcohol and caffeine which can dehydrate you.

Stop Medications 72 Hours Before

It’s wise to stop taking any medications like prescription opiates at least 72 hours before the oral swab. Even legal meds can trigger a positive, so give your body time to clear them.

Eat High-Fat Foods

In the 48-hour window before the test, focus on eating high-fat foods like avocados, nuts, seeds, eggs, and fatty fish. A high-fat diet helps curb the cleansing of drug metabolites from saliva. Just don’t overeat right before the test.

Following these guidelines along with other tricks like hydrogen peroxide rinses can optimize your chances of passing that mouth swab drug test. Be diligent in your preparation!

How Does Mouth Swab Test Work?

A mouth swab drug test, also known as an oral fluid test or saliva test, is designed to detect recent drug use. An absorbent collector swab is used to collect a saliva sample, which is then screened for the presence of drugs and their metabolites.

Unlike urine tests, mouth swab tests do not look for drugs that have been metabolized by the body. Instead, they look for the parent drug compounds themselves. Saliva tests can detect drugs that have been used in the past few hours up to 2-3 days, depending on the drug.

The collector swab is placed under the tongue to absorb saliva. Oral fluid contains trace amounts of drugs that enter the mouth from smoking, vaping, inhaling, ingesting, or snorting. As blood flows through the gums and tissues of the mouth, drug particles seep into the saliva. The swab collects these drug residues for testing.

The saliva sample is then screened for drugs using immunoassay technology. Antibodies bind to specific drug compounds and metabolites if they are present. The results are indicated on the test device, similar to a pregnancy test. A positive result means drugs were detected, while a negative result means the saliva did not contain detectable levels of drugs.

With its ability to identify recent drug use, the mouth swab test serves as an effective deterrent for employers, probation programs, schools, and more. The non-invasive nature of collection makes it preferable over blood or urine sampling in many settings.


Passing a mouth swab drug test requires advanced preparation and knowledge of effective strategies. Focus on diluting saliva, removing drug residues, stopping medications, and boosting fat intake beforehand. With a commitment to these oral cleansing tips, you can hope to test negative and put your best mouth forward.

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