Ways to Clean Out Your System in 24 Hours

If you’re looking for ways to clean out your system in 24 hours, chances are you’ve been invited for an impromptu drug test on short notice, and you are worried that traces of THC or other drug toxins might end up in your sample cup.

In this article, we’ll look at cleansing techniques that people’ve successfully used to flush out toxins from their bodies and pass a drug test in 24 hours. We’ll also mention some unreliable ways that resulted in failed drug tests.

But before we get to the list, let’s answer an important question:

Is 24-hour drug detox even possible?

Generally speaking, it’s not possible to completely detox your system in 24 hours. It takes time for your bloodstream, fat cells, hair follicles, and other organs to lower their toxin levels. This is especially true if you’re a long-term drug user.

A complete detox will take at least a week. But, in most cases, it takes longer for all traces of toxic substances to be removed from your body so it’s ready to pass a drug screen.

If you’re looking to remove all these toxins from your body permanently to reduce body fat and benefit your overall health rather than just passing a drug test in 24 hours, you need to understand it takes time.

Suppose you eat a nutritious diet – with lots of protein and fiber – and do cardio, have a regular sleep pattern, and drink water and anti-oxidant juices. In this case, you could completely remove all traces of THC-COOH from your body in between four to six weeks.

A complete 24-hour detox might not be possible, but that doesn’t mean it’s impossible to “flush out” toxins from your system temporarily so that you can produce clean urine stream to pass a urine drug test in the morning.

The aim of cleansing your system for marijuana drug test is not to rid your body of all traces of THC-COOH or other toxins. Instead, what you’re trying to do is to ensure that these toxins don’t show up on your test so that you can get a negative result.

If the test you have coming up is to detect THC, then let’s have a look at some ways of achieving this goal.

How to pass a drug test in 24 hours?

Each trick to pass a drug test in 24 hours from this list has worked for someone in the past. This doesn’t mean it’s 100% going to work for you – especially if you’re one of “heavy smokers”.

But, if somebody forced you to submit a drug test sample to a testing lab on short notice, then trying one of these methods could be the best way to avoid positive test result.

These methods are mainly useful for urine tests. You may also be required to do a saliva test, blood test, or hair test, depending on particular work places (more information in our pre-employment drug test article).

Other tests, such as hair tests, cannot be passed on short notice, especially for a heavy user. If a sample is taken for a hair follicle test, it will likely contain traces of almost all of the drugs you’ve taken within the last 90 days.

A blood test is also hard to prepare for within 24 hours, as it’s impossible to clean out your blood in the same way. Thankfully, most drugs remain in your bloodstream only for a short time (see How Long Do Drugs Stay in Your System?)

1. Drink plenty of water

When attempting to pass a urine test on short notice, the first thing people usually do is drinking lots of water.

The aim of drinking water generously is to flush cannabinoids and drug toxins from your bladder to the point it’ll dilute your urine, so no significant amounts will be detectable.

It’s important to remember that you need to be careful when drinking large amount of water on the day before your drug test. Yes, you want to drink enough to dilute your urine and temporarily “mask” weed and other drugs.

But you also want to avoid drinking so much that you develop hyponatremia, which can be lethal in some cases1.

Another problem with this way of cleansing is there’s a good chance that your results will come back inconclusive. This might give you more time to prepare for your second test, allowing you to detox from Marijuana properly.

Or, your employer will request you to take a saliva test or even a hair follicle test. To avoid this, you’d want to ensure that you don’t dilute your pee too much, which we’ll get onto later in the article.

2. Avoid exercise before THC testing

It might seem counter-intuitive that exercise may be considered anything but a positive factor. And, in general, working out is something that everyone should do, along with avoiding fatty foods, to increase metabolism, reduce water retention and burn some body fat.

However, in case of a drug test for marijuana, you want to avoid hitting the gym, at least within 24 hours before filling the sample cup.

The fact is when you work out, your body goes into fat-burning mode. This the best way of reducing your body weight by burning body fat. But it’s not what you want to do before a drug test for THC.

If your body starts to break down fat cells, they’ll be flushed out through your sweat and urine. Since THC metabolites are present in fatty lipid tissue, by exercising, you’re making it more likely that the drug test will pick up THC-COOH.

3. Give mid-stream urine sample

When it’s time to urinate, it’s important to remember that the first and last parts of the urine you’ll expel from your body will contain the largest amount of THC metabolites or other drug toxins.

To ensure that your sample isn’t loaded with these metabolites, you want to start your stream and then collect the sample when you’re mid-flow.

If you’ve got the choice, you also want to pick the right time to urinate. These metabolites will be more present when you wake up during the first few urinations of the day. If it’s possible to schedule your urinalysis test in the afternoon, then be sure to do so.

4. Flush out your system with a detox drink

A better alternative to drinking plenty of water is to invest in a quality detox drink, of which there are many on the market. This is a great way to clean out your system in 24 hours and prepare for a drug test.

A few hours before your test, you’ll want to drink the detox drink, which will flush your system for a certain amount of time. All 24-hour cleansers are different, so make sure to check the instructions.

The time frame mentioned above is important. If you think there’s a chance of your drug test to be delayed, you don’t want to drink a detox drink too early, because drug toxin count will return to the same level within a few hours after consuming it.

5. Swap your pee sample with synthetic urine

As we’ve learned, it’s almost impossible to clean out your system in 24 hours completely. It takes a while for THC and drug toxins in your body to be completely expelled.

Within a week’s notice, it’s just about possible for a casual drug user. But for people who are used to heavy consumption of drugs, it will take weeks to clean out your system.

There’s a different and probably the best way to pass a drug test on short notice, provided it’s a urine test and not a directly observed one — to switch your pee for synthetic urine.

Synthetic urine is surprisingly easy to purchase, even though some states have “banned” its use for drug testing. As far as users’ recommendations go, Sub Solution is one of the best available, and it’s proven to do the job.

It’s important to remember that to pass a drug test with synthetic urine, you’d want to ensure it has the same temperature as if it came out of your body.

Sub Solution, for example, contains a heat activator powder that can make sure that synthetic urine is at optimum temperature to fool the test.

This way to pass a drug test is not without risk, but it’s the only one where you don’t need to worry about any traces of THC metabolites in your urine, because it’s manufactured to be 100% toxin-free.

Detox supplements for THC test

There are three popular types of detox products on the market that offer ways to clean your system in 24 hours.

Let’s look at each type and how they might offer a way to beat drug tests within 24 hours:

Detox drinks for cannabis test

As we’ve seen earlier, detox drinks are ideal for almost anyone who needs to pass a drug test on short notice.

The thing is, detox drinks will mask the THC metabolites in your urine sample for a limited period of time. Some cleansing beverages will give you a window of an hour or two, while others can supposedly hide drug metabolites for several hours.

Remember, after consumption, you will need to urinate a few times to remove the THC metabolites from your body so that the urine you provide for a drug test is clean. We’ve also written a great post about best natural detox drinks for drug test.

Detox pills for cannabis test

Detox pills are effective at removing drug metabolites from your body permanently, but usually they need to be taken at least 5 days before a drug test for weed.

So, if you’ve only got 24 hours to clean your body of drugs, then detox pills won’t be the best way.

Detox kits for cannabis test

A detox kit will usually contain a drink, a capsule supplement, and a home test. You can follow the instructions, then test yourself in preparation for drug tests.

It’s possible to purchase a type of detox kit that aims to clean your body of THC in 24 hours too. In reality, it’s usually a detox drink fortified with herbal pre-cleansing capsules, which are supposed to be taken at least 48 hours before drug test.

Detox supplements are a great option that should be considered if you’re not able to use synthetic urine, which is, in our opinion, the best way to pass drug tests with any toxin levels.

Fake pee being illegal in your state is one good reason not to use it. Of course, we don’t suggest you should buy it in such case. Taking detox supplements is 100% legal to our knowledge, but you may want to consult your lawyer first.

Home remedies that don’t work

You may find a lot of drug test remedies on the Internet, many of which seem too crazy to work. And indeed, someone needs to be really desperate to try them. Let’s analyze a few home remedies that at least make some sense:

Drinking cranberry juice

Diuretics like cranberry are suggested by some users to induce urination, much like drinking a lot of water. This can lead to your sample being rejected from the facility that administers tests for drugs, or your employer will see the unnatural color of urine sample in case of an instant test.

Taking B vitamins and creatine pills

To get around overly clear pee, many people offer tips of taking vitamin B, such as B12, to make pee yellow. In addition, creatine supplements are meant to replace creatinine that over-dilution removes. However, this won’t clean out your system, so it’s by no means the best way to pass a drug test.

Making ginger tea & lemon juice

Ginger, lemon and green tea are other ways people suggest for cleaning your system for drug tests due to their vitamin C content. But there is nothing beyond minor anecdotal data that consumption of either will cleanse your body of toxins that will get you through drug tests.

Of course, you can try combining all of these remedies together, but it’s easier and cheaper to just get a good detox drink from the store. It’ll already contain all the necessary diuretic ingredients and nutrients to make sure your pee isn’t over-diluted.


We’ve now looked at all the ways to clean out your system in 24 hours. There is, unfortunately, no sure-fire way of truly cleansing your body from weed or other drugs in such a short time.

Passing drug tests doesn’t always require a completely clean system, though. Synthetic pee and detox supplements are known ways of achieving this.