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

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Being caught unaware by a drug test can be one of the worst things to happen to you. You could lose your career, your income, and your livelihood; it’s a big deal!

If you’re trying to find a way to pass a drug test in under 24 hours, there are a couple of methods that work; and a lot of them that don’t. There’s a whole lot of information to cover, luckily we’ve collated what works and what doesn’t right here so that you don’t have to go sifting through the entire internet.

We’re mostly going to focus on cannabis and THC here since that’s the chemical compound that stays longest in your system, but these methods are also proven to work for other substances.

Understanding How Drug Test Work

Now, probably the most important part of getting a good result on your drug test is understanding the test itself. You may think that it’s just going into the test site, giving your urine sample, and then anxiously waiting for the results, but there’s more to it than that.

Windows of Detection

No matter what drug you’ve taken, you need to understand how long the chemicals of that drug can stay detectable in your system.

Most drugs are undetectable in urine after about a week because they go directly into your bloodstream, and then are expelled relatively quickly. However, cannabis is fat soluble, meaning that it can stay detectable in your body for up to 60 days because it binds your fat cells.

If you’re a light or occasional smoker, then it might not be as bad, and traces of THC can disappear after a week or so. However, if you’re a heavy smoker, THC can remain detectable for up to 60 days if you have high body fat.

Types of Drug Tests

There are four main types of drug tests: blood tests, saliva tests, urine tests, and hair follicle tests.

Blood tests aren’t commonly used mainly because the window for detecting illegal substances in your blood is significantly shorter than other tests. It also involves taking a sample of your blood, which many people will find intrusive.

how to pass a urine drug test in 24 hoursSaliva tests are also pretty uncommon because the window of detection for drugs in your saliva is pretty low. That being said, saliva tests are also the type of drug test least known about, so there aren’t a lot of ways to cheat them.

Urine tests are the most common type of test, the easiest to administer, and the cheapest. If you’re getting a drug test, you’re most likely going to take a urine test, and should be prepared for that. Sometimes, there will be a witness present when you deliver your sample to ensure that you’re not tampering with it, but it is useful to know that they’re not legally allowed to look directly at your genitals when you do deliver the sample.

Hair follicle tests are the most thorough kind of drug test, and are incredibly hard to deceive. They can test for any drug and go back 90 days, so if you find out you’re taking a hair follicle test, see our article: (how to pass a hair follicle drug test).

99 times out of 100 you’re going to be facing a urine test. So you should prepare for that.

Parameters of Passing

In each different state, there are certain parameters for passing drug tests. For some testing centers, there is a certain amount of substance that can be present in your urine that is acceptable, while for others, any trace of an illegal substance can constitute a failing test. It’s best to learn the specific parameters for your own state or country in order to know how easy or hard it is to pass your drug test.

Testing centers test for a variety of factors in your urine, such as pH level, temperature, and levels of other hormones and chemicals in your urine to make sure that your sample is legitimate, and therefore, it’s important to get this right.

There are also four major types of results that you need to be aware of when taking a drug test. The two main ones are positive and negative; positive meaning that drugs were detected in your system, and negative meaning that there were no drugs detected in your system.

There are also false positives and inconclusive or invalid results, which can be worrying. Having either a false positive or an inconclusive/invalid result in your test can mean that you’ll have to take the test again.

Methods of Passing a Drug Test in 24 Hours

Now, there are a lot of different ways to pass a drug test, but there are very few that can help you with a 24-hour notice. There are a lot of methods that claim to help you beat drugs tests in a day’s time, but most of them are bogus, and will actually endanger your results even more.

What Doesn’t Work

1. Water

Drinking lots of water is the most commonly known false method to help you pass a drug test. It’s the most well known because it used to be true. In the early days of drug testing, when the tests weren’t as accurate as they are now, you used to be able to pass after drinking a lot of water because of the sheer dilution of urine.

However, that’s not the case in this day and age, as drug tests have gotten more sophisticated over time, and can detect more minute levels of drugs in your system.

2. Vinegar

Drinking vinegar or adding it into the urine sample is also a common myth that a lot of people reiterate. This is simply not effective, as this does nothing to rid your urine of illicit substances, and will very clearly show that you’ve been tampering with your drug test.

3. Cranberry Juice

Drinking cranberry juice is an age-old method that old stoners will swear by. Cranberry juice is a natural antioxidant that is used for detoxing your body, but with the advancement of drug tests, this old method has lost steam, and will not allow you to pass a drug test, no matter how many jugs of juice you chug.

4. Baking Soda

Some people believe that consuming baking soda or adding it to the urine sample will help them pass a drug test. This is mainly because of the amazing cleaning power of baking soda, and because it naturally occurs in the human body in trace amounts. Sadly, baking soda won’t help you pass a drug test, as it won’t even rid your urine of any illegal to pass a drug test in 24 hours


5. Dishwashing Soap

Many people believe that adding dishwashing soap to your urine sample will make it test negative for drugs. This is just misinformation, as dishwashing soap contains so many substances that are not found in human urine.

6. Diuretics

There is a common belief that you can detox your body of drugs if you take diuretics to flush out all the toxins. While this method may hold some water, diuretics leave behind some chemicals in your urine that can indicate that you were trying to fake the test.

7. Taking the Sample Mid-Stream

Some people also wrongly believe that all the drug substances are present in the beginning and the end of your urine stream, so taking the sample while you’re in the middle of your pee will help them pass. This is just plain wrong. In fact, you are encouraged to do this by the drug test centers themselves, as this provides the best sample.

How to Pass a Urine Drug Test In 24 Hours – What Works

Synthetic Urine

image of quick fix best synthetic urineOne of the few things that do work is synthetic urine. As drug tests have advanced over the years, so has synthetic urine. Modern formulas are close enough to real urine that most drug tests can’t tell the difference. However, you still need to make sure that the temperature of the synthetic urine is correct.

This is where synthetic urine dispensing devices come in. There is a myriad of different synthetic urines and urine dispensing devices on the market, and there are many that work better than others or have different levels of difficulty and features. It’s up to you to do your due diligence with researching and choosing which synthetic urine product is best for you—but for our money, we recommend Quick Fix urine.

You can also use a friend’s urine that you know to be clean, but that comes with its own set of problems, as they may have some hormone that makes it obvious that the sample didn’t come from you, or they may not be as clean as you first thought.

Detox Drinks and Programs

Another way to pass drug tests in 24 hours is by purchasing a detox drink. No, I don’t mean those detox drinks that are supposed to help you diet. I’m talking about scientifically formulated drinks that are designed to make your urine test clean for a specific time frame.

Most of these detox drinks have very specific instructions that you have to follow in order to test clean. However, most of them just require you to take the drink at a specific time before your test and then wait for that long without peeing.

These detox drinks can be very effective, but have limited usefulness, as they’re a one-shot thing. You also need to pay close attention to the instructions and not deviate from them, or else you risk foiling your drug test.

Oil Change

The most painful and dangerous—but arguably most effective—method out there is the oil change. This involves putting a catheter up your urethra and emptying your bladder out, then replacing your pee with synthetic or clean urine.

Just putting a catheter into your genitals is going to be extremely painful, but there is also an added risk of infection if you don’t do it properly. This means that you probably need this to be done by a medical professional, and that can be very expensive.

However, this method can beat a drug test that has a witness, as you’ll be dispensing the sample naturally. So if you’re extremely paranoid, this may be the best option for you, just fight through the pain.


The best way to pass a drug test is to abstain from doing drugs, but if you’re in a pinch, you may look to home remedies for a solution. Most home remedies to pass a drug test in 24 hours don’t work. There are very few methods that do, and you’ll need significant preparation in order to make them work.

Whether you’re using fake urine or a detox drink, you have to make sure that you’re following the steps required and doing the research and due diligence to choose the right product for you. You should also be aware that whatever product you choose, there will be a shipping time, so prepare for that.