How to Pass a Drug Test in 24 Hours (Urine, Hair, Saliva, Blood)

We’ve all been there: you’re wrapping up the interview for your dream job, and it’s going perfectly.  Until—record scratch—the interviewer says something like, “We’d like to extend the offer pending a required drug screen. Please report tomorrow for your drug test.” You smile confidently and agree, but on the inside—yikes! Fortunately, you have options available to you.

If you have longer than just 24 hours to pass a drug test than your options become a lot wider and more accessible with a little more time. For some methods we’ll discuss below, like how to pass a hair follicle drug test in 24 hours, are less damaging when you have a wider window for detoxification.

While it’s true that there’s no cleansing program that can totally cleanse all the fatty tissue of your body within 24 hours (the primary goal for passing a urinalysis, one of the most common drug screens), there are products available that can provide you with a small window of time during which you’ll test clean.

If you’re taking an unsupervised urinalysis, the solution is even simpler: use this kit to provide a guaranteed clean sample. There are even options for short-notice hair testing, which we’ll discuss in detail here. No matter what test you’re being subjected to, there’s a way to get clean in time!

Detoxing for a Drug Test: Know What You’re Up Against

In order to effectively detox the part of your system being tested, you’ll need to know what kind of test you’ll be subjected to. After all, clearing your blood won’t help you pass a urine screen, and flushing your system won’t save you from a hair follicle test. You’ll need to know what type of screening you’re up against before you can cleanse your system properly.

Sometimes it can be difficult to determine what type of drug test your potential employer plans on having you take. The majority of major businesses use the tried and true standard piss test to determine if THC is lingering in your body. A urine drug test is typically administered for a new job 75% of the time. After that typically comes hair follicle drug tests, blood tests, and at the bottom of the list, saliva drug tests.

With any of the detox methods, we’ll discuss below, it’s important to stop consuming cannabis immediately. It may seem obvious, but you want to keep from introducing any more THC molecules to your system, which could recontaminate you and lead to a positive result.

How Long is THC Detectable in the Body?

How far out your drug test will be able to detect THC in your system is going to depend on the type of test.

First Time User 1-2 Times a Month 3-5 Times a Week Daily Use
Urine Up to 1 Week 2 Weeks – 4 Weeks Up to 2 Months Up to 3 Months
Hair Unlikely 1 Week – 3 Months

1 Week – 3 Months

1 Week – 3 Months

Blood 6 – 24 Hours Up to 1 Week Up to 1 Week Up to 1 Week
Saliva

First 24 Hours

First 24 Hours

First 24 Hours

First 24 Hours


How to Pass a Mouth Swab Drug Test In 24 Hours

A mouth swab is one of the easiest tests to pass, especially on short notice — some mouth swag tests don’t even test for THC! But, don’t ask your administrator what the specific mouth swab drug test you’re taking takes into consideration. That would seem a little suspicious, no?

Abstention for a day or two clears THC from saliva naturally and easily (provided you brush your teeth like normal!), but you can accelerate this process in a few ways: first, consume high-fat foods. THC is lipid-soluble, meaning it binds to fat molecules so fatty foods can help make THC make a quicker exit from your mouth.

Second, brush brush brush! You’ll want to combine good oral hygiene with vigorous mouthwashes (alcohol binds to THC as well, but be careful not to use an alcohol-based mouthwash right before the test!). To make sure you pass on short notice, use this mouthwash a few minutes before your swab for an extra layer of protection; it cleanses any lingering undesirable chemicals in time for a short-notice mouth swab.

Toxin Rid Rescue Wash Mouthwash Product Review

How to Pass a Blood Drug Test In 24 Hours

Blood tests also have a fairly short window of detection, as THC usually only lasts for a few hours in the bloodstream. It’s also quite expensive and the sample needs to be sent off to a lab for testing, so for these reasons, it’s not a very popular drug test. That said, some companies do still use it (especially immediately following a workplace accident), and there’s a chance you could have to take one.

Using a 10 day program can help clear your system more quickly, though it helps if you have more than 24 hours to prepare. As long as you have a full 24 hours to abstain, your blood will likely test clean—blood tests take a “snapshot” of the last few hours, but they don’t indicate habitual cannabis consumption. However, if you’re subjected to a blood test, you might be asked to take a urinalysis in conjunction with it (read on).

How to Pass a Urine Drug Test In 24 Hours

A short-notice urinalysis is enough to rattle any cannabis consumer, and it’s easy to see why: urine drug screens test not just for THC, but also its main metabolite, THC-COOH, an inactive form of THC. Using an antibody designed to bond with THC and THC-COOH, the immunoassay detects the chemical that gets you high, as well as its main metabolic byproduct.

The bad news is, THC and THC-COOH can linger in the body’s fatty tissue (they’re lipid-soluble, remember?) for months in heavy cannabis consumers. This means that cleansing your tissue of all THC completely within 24 hours is, unfortunately, impossible. That said, there are two reliable ways to beat a urine screen with little to no notice. The first is the substitution method.

To use this method, purchase a urine kit (shown in image below) and keep it on hand for a surprise drug test. Then, the day of your test, mix the powdered urine with water and use the included heater to warm it up to body temperature. The reusable temperature strip will let you know when your sample is between 90 and 100 degrees. Then, use this sample when it comes time for your test!  While this method only works for unsupervised drug tests, it is a surefire way to test clean every time.

TestClear Powdered Urine Kit Product Review

If you have to take a supervised drug test, don’t fret: there’s still another option. You may not be able to totally cleanse your entire system, but you can give yourself a window of time during which you’ll test clean. Take a drink (shown in image below) in its entirety about three hours before you’re scheduled to take the drug screen, then fill the empty bottle with water and drink that as well. If you have time the day before, take the included pre-cleanse pills with 16 oz of water each over six hours. However, avoid taking them within twelve hours of your test.

Mega Clean Cleansing Drink Product Review

Keep drinking fluids in the hours leading up to the test (don’t overdo it, overly diluted samples are also a red flag, but do keep safely hydrated) and make sure the sample you provide for your test isn’t the first pee after drinking Mega Clean. Urinate as many times as you need to beforehand. It’s effective for five hours after consumption, with its peak effect after three hours, giving you a moderately flexible window during which you can test clean.

Passing a Hair Follicle Drug Test in 24 Hours

Since hair tests go back so far (the period tested is only about 90 days worth of hair, but it could theoretically be tested all the way to the ends of the hair shaft) and have such a low threshold for detection, they’re notoriously hard to beat. That said, you do have some options, though we should warn you that your hair will hate you for what we’re about to recommend.

First of all, you’ll need to get a cleansing shampoo like Toxin Rid or Zydot (we highly recommend the combination of both: Toxin Rid before, and Zydot to finish). The three-part cleansing system of Zydot makes for a good final deep clean before the test and restores some strength and shine to the hair, which will be quite dry after all is said and done.

We recommend washing your hair at least 10-15 times with the shampoo, perhaps supplementing with Zydot every 5 washes or so, before you’re due to test. It sounds extreme, but it works. You’ll need to let the shampoo sit on your scalp for about 15 minutes each time before vigorously scrubbing to remove oils and other molecules from the hair shaft. Focus on the scalp, where oils tend to remain.

You can also supplement with vinegar rinses, salicylic acid acne treatments, even detergent washes (your hair won’t like it at all, but it will help). You can also use a bleach or box dye that includes peroxide developer to help remove excess THC, though it would take multiple processes to remove everything through this method. It’s important to avoid re-contamination by contact with things like hairbrushes, linens, and hats that were used on your un-cleansed head. Change all your linens, wash hats, and perhaps get a new hairbrush just for this purpose.

A Quick Note About Drug Testing

If drug testing is a part of the conditions of your employment, you might be concerned about the potential of CBD to cause you to test positive for THC. This isn’t an unfounded concern — however, there isn’t exactly a cut-and-dry way to answer it.

Much of the data we have about CBD is anecdotal, and its potential impact on drug testing is no exception.  There are very few peer-reviewed studies on the subject, and the ones available paint a rather murky picture:  avoiding full-spectrum products containing traces of THC can reduce your risk of a false positive, but that may not eliminate the risk entirely.  A single study (as yet unconfirmed) suggests that even isolate-based products may not be completely risk-free under certain circumstances.

If you are concerned about passing a drug test, you’ll need to consider this potential risk when deciding whether CBD is right for you. To learn more about the science of CBD and drug testing, check out our article for a more thorough discussion of how to minimize your risk of a false positive.

Conclusion

There are a number of ways to pass a drug test on short notice, especially if you’re prepared. If you’re looking for a job or work for a company that is known for random testing, keep a detox product or two on hand to keep you covered at all times. From simple saliva testing to the dreaded hair test, there’s a way to beat any test with just 24 hours notice.

We’re happy to provide our readers with a custom TestClear discount code, simply enter the promo code: ‘TestClear10‘ at checkout to get 10% off of all TestClear detox products!

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How to Pass A Mouth Oral Swab (Saliva) Drug Test

While cannabis is legal in an increasing number of states, that doesn’t mean employers aren’t still testing for it. If anything, legalization has renewed interest in drug testing (largely to do with the alleged increase in people driving under the influence), particularly using mouth swabs. Mouth swabs are some of the most commonly used drug tests, and it benefits everyone to know how to pass one.

So how do mouth swabs differ from other types of drug testing, and how can you pass one easily? Here, we’ll discuss the science of mouth swabs, what they test for, how long THC stays in your saliva, and how you can accelerate the process of clearing it out to pass a drug screen.

What Do Mouth Swabs Test For?

Saliva tests differ from in the chemical compound they test for. Urinalysis screens for both THC and its primary metabolite, THC-COOH. Saliva tests, on the other hand, test only for activated THC, or delta-9 THC, the stuff that ends up on the inside of your mouth after taking a bong rip, a puff off a vape, or a bite of an edible.

In a way, this is good news: it means that, since THC doesn’t stick around long in your saliva, the ability of the test to detect cannabis consumption is pretty short-lived. It also means that the test won’t pick up lingering metabolites in your system. However, it still tests for the psychoactive, and thus illicit, delta-9 THC that lingers in your spit in the period following consumption.

What Type of Employers Use Mouth Swab Drug Tests?

While urine tests are an employers favorite type of drug test (being used over 75% of the time for drug screenings) the reality is, there are still many businesses that use the good old saliva drug test to get the job done. Saliva drug tests are easier to administer than most other drug tests, and because of this, employers will regularly save money by completing these in house.

Because of these reasons, smaller businesses and those that give tests on the fly are typically the ones that use mouth swab drug tests thanks to their simplicity.

We typically see the following verticals being the ones that are tested most for THC:

  • Union Workers
  • Transportation
  • Energy
  • Construction
  • Federal Employees

Generally, drug testing is a common practice among those who handle jobs that deal with physical labor, protection, health, property, and safety.

When it comes down to it, even using 100% legal marijuana can prevent you from securing or keeping your job. You always want to be prepared and aware of what type of drug test your employer plans on giving you if any.

When do Employers Use Mouth Swab Drug Tests?

Since the mouth swab drug test is so simple to use it’s prone to be administered before employment, random screenings, or after a work-related incident.

  • Before Employment – It’s a common policy for employers to screen potential employees and applicants even before they are guaranteed employment. The reason that employers attempt to do this is that you are at your most vulnerable — you can’t appeal the drug test, you’re not apart of a union yet, you have no time off to avoid the situation. It’s the perfect time for an employer to undergo a drug test.
  • Random Screenings – Randomized drug tests are typically given at regular intervals and without notice by employers in labor-intensive jobs. Be aware, that in some states, there are laws in place prohibiting your workplace from administering a drug test without adequate time. Educate yourself to know your rights! Additionally, if you suspect you’re being ‘picked on’ by your employer for not-so-random drug tests — be sure to also look into your discrimination laws.
  • Post-Work-Related Incident  These drug tests occur after a work incident that has caused damages to property, injuries, or a very ‘near-miss’. Some workplaces have it in place so that if any ‘incident’ occurs, you automatically will have to take a drug test. In other cases, your direct superior will decide after the accident if you will need to take a drug test.

How Long Does THC Stay in My Saliva?

Fortunately for cannabis consumers, THC doesn’t hang out in your saliva for very long, and any THC metabolites on their way out of your system from your salivary glands aren’t going to show up on the test, because the test isn’t looking for them.

Technically, there’s nothing keeping THC in your saliva. It coats the entire surface of your mouth when you smoke or consume it, but it dissipates pretty quickly after that. Even if you, for instance, literally never brush your teeth (gross), THC would only remain detectable in your saliva for a week or less after you last consumed it. For most of us with good dental hygiene, the number is more like a day or two.

This means that, if you know the test is coming up, you can simply abstain from cannabis for a day or two, and perhaps be extra vigilant when you brush your teeth. If you need to speed up the process, however, there are things you can do to accelerate the clearing of THC from your saliva.  Since you can purchase CBD legally online now, you can also try the abundant types of CBD concentrates and isolates out there. Canna Comforts offers organic, non-GMO hemp flower strains that look, smell, feel, and smoke just like their high-THC muses, and lower the risk of failing a drug test.

Canna Comforts Raw Hemp CBD Flower Lifter Strain Review

How To Clear THC from Your Saliva

Since the window of detection for mouth swab tests is relatively short, it’s a good idea to simply hold off on smoking for a few days leading up to when you suspect the test. Edibles reduce the risk of detection a little bit, but it’s better to just abstain for a couple days rather than take the gamble. You might also consider an organic, non-GMO hemp flower strain or in the interim. Researchers are working on a test with lower ranges, so it’s a good idea not to put yourself at risk for a nasty surprise!

Sometimes, however, you don’t have an advance warning, requiring you to find a quick solution to help you pass the swab. For these time-sensitive instances (like a police checkpoint or a surprise test at work), there are two reliable ways to pass the test.

Passing A Mouth Swab Drug Test With A Few Hours Notice

As far as surprise drug screens go, the best-case scenario is that you’re going to be tested, say, at work, but you have a few hours before the swab. First, start drinking lots of fluids. Vigorously swish water around in your mouth, and use a non-alcoholic mouthwash if you have some on hand. If you can brush your teeth, absolutely do, and be thorough!

It’s also a very good idea to get a helping or two of some fatty food. Remember, THC is lipid-soluble, meaning it bonds to fat, so eating something with a high-fat content can help remove lingering THC from your mouth quickly and effectively.

Passing a Mouth Swab Drug Test With Little to No Notice

In the worst-case scenario, you get pulled over and don’t have a moment to spare. Don’t freak out just yet: you’ll be prepared after reading this guide. It’s time for some adulteration!

You might have heard of the adulteration method if you’ve been researching how to pass a drug test: adulterants are chemicals that interfere with a drug test’s ability to read the sample, and there are new and improved ones coming out constantly. This is because there’s an arms race of sorts between drug testing companies and the people trying to beat them: an adulterant works and beats the test, only for a new test to come out that can detect the adulterant’s presence, and the process starts all over again.

For mouth swabs, the general adulterant of choice is hydrogen peroxide. You can swish some vigorously around in your mouth quickly and adulterate your saliva enough to fool the test. This trick only works for a short period of time, so you have to use it just minutes before you’re swabbed. For this reason, it’s not ideal, but it does work in a pinch.

We recommend keeping a bottle of Toxin Rid in the glove box for such instances, as it works quickly and reliably, and certainly tastes better than hydrogen peroxide (ick). Swish with one-third of the bottle at a time, spitting between, and pop in a couple of breath mints for good measure.

Have a full 24 hours to pass your mouth swab drug test? See our blog on how to pass any type of drug test in 24 hours.

A Quick Note About CBD & Drug Testing

If drug testing is a part of the conditions of your employment, you might be concerned about the potential of CBD to cause you to test positive for THC. This isn’t an unfounded concern — however, there isn’t exactly a cut-and-dry way to answer it.

Much of the data we have about CBD is anecdotal, and its potential impact on drug testing is no exception.  There are very few peer-reviewed studies on the subject, and the ones available paint a rather murky picture:  avoiding full-spectrum products containing traces of THC can reduce your risk of a false positive, but that may not eliminate the risk entirely.  A single study (as yet unconfirmed) suggests that even isolate-based products may not be completely risk-free under certain circumstances.

If you are concerned about passing a drug test, you’ll need to consider this potential risk when deciding whether CBD is right for you. To learn more about the science of CBD and drug testing, check out our article for a more thorough discussion of how to minimize your risk of a false positive.

Conclusion

As far as drug screens go, mouth swabs are pretty easy to beat. They only detect THC for a short time and are easy to pass with flying colors if you know a few days in advance. However, if you’re caught by surprise, you still have options! Keep calm and get your mouth clean as quickly as possible, or deploy an emergency method a few minutes before the test. We suggest stocking up with some mouthwash — use discount code: ‘TestClear10‘ to get 10% off of all TestClear’s detox products sitewide!

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