How To Pass A Urine Drug Test In 24 Hours (On Short Notice)

Medically reviewed by Haiko Maaswinkel (B.Sc., MPH) — Last update on Transparency Disclosure

How To Pass A Urine Drug Test in 24 hours - MedSignals

Random drug tests can be a major inconvenience if you’ve spent the last weekend at the concert with a joint between your lips. Yet, drug testing shouldn’t scare you if you’re given several days to prepare and adequately detoxify.

As modern detoxifying products are being released to the market, the process is becoming faster and more efficient. But if you’ve received a 24 hours notice about upcoming drug test, the window for detoxing becomes limited.

Still, even a 24 hours cleansing doesn’t have to be stressful. After reading this article, you’ll be armed with expert knowledge on how to pass a urine drug test in 24 hours.

Best Ways To Pass Urine Drug Test In 24 Hours

Substituting your pee is the best way to pass a urine drug test in 24 hours if you’re not being supervised. It requires very little preparation, and you’re left with two possible methods: synthetic urine or using someone else’s clean urine.

Substitute Clean Urine

Using someone else’s urine could work in some circumstances, though you have to pay attention to certain risks involved. Not only do you have to find a trustworthy person to produce a clean urine sample for you, but you have to take special care of that pee.

Human urine is incredibly hard to conserve.
Due to bacterial action, a urine sample can become cloudy and stringy in appearance.
In other words, it can quickly go bad, and you can’t use it to pass a drug test.

The only way to properly store human urine sample is to chill or freeze it immediately after collection1. However, this leaves you with another problem.

Drug testing facilities require a fresh sample, which has a temperature of about 94° to 100°F.

And if you store human urine in a fridge, you’ll have to reheat it to the correct range, which may prove troublesome.

Though it’s possible to pass a urine drug test in 24 hours by using someone else’s urine, this method requires too much effort to be feasible. Using other people’s urine to pass drug tests should be considered a last resort only.

Synthetic Urine

The best way for substituting your urine is fake pee. The use of synthetic urine is among the best ways to pass a urine drug test in 24 hours due to its ease of use and accessibility.

And most importantly, good brands of synthetic urine are indistinguishable from natural human urine and undetectable by lab urine drug tests.

Fake pee contains all the necessary components found in natural human urine, including B vitamins, uric acid and creatine. It’s either pre-mixed or in powder form, in which case you’ll have to mix it yourself before your drug test.

Heating synthetic urine to the correct range is quite easy; you only have to use a provided heat-pad or chemical heat activator. After that, it’s only a matter of maintaining the temperature and swapping the urine for drug testing.

Substituting fake pee for your urine sample is a very popular method of cheating, which works best for unobserved drug tests.

But if you’re taking a directly observed drug test, where lab technician is watching you urinate, you might want to try a different approach. In those situations, your safest bet is to flush your system to remove drug metabolites from your body.

Flush THC From Your System

Flushing out drug metabolites from your system in order to pass a urine drug test can be a tedious task, which requires time and dedication. It usually takes several days, if not weeks, to complete.

However, some products can temporarily remove drug metabolites from your bladder, making urine able to pass drug testing. Those products usually include THC detox pills and drinks, or the combination of both.

Fastest Ways To Clean Out Your System In 24 Hours

If you want to know how to pass a urine drug test in 24 hours by flushing out drugs from your body, the answer is to let your body detoxify naturally and use same day cleanse products.

To further clarify, you should stop smoking weed immediately to prevent the introduction of new metabolites into the body. Also, you should use same day cleansing tablets or liquids.

THC Detox Drinks

Detox drinks are specially made beverages that remove drug metabolites from your bladder.
In doing so, they effectively make your urine clean and suitable for passing urinalysis.
Still, you should exercise caution, as the effects of detoxing drinks are temporary and last only a couple of hours.

THC flush drinks achieve their purifying effects by making you urinate more frequently. For maximum efficiency, they’re usually ingested approximately 2 hours before the test, following the instructions provided by the manufacturer. Afterwards, the ingredients take effect, and you’ll feel a need to urinate more frequently.

You should urinate at least three times before the drug test, to ensure that your urine is free of any illicit substances. By following the directions provided by the manufacturer to the letter, you can confidently pass a drug test in 24 hours.

However, detoxification liquids only cleanse your urine for several hours, during which you should produce the sample. After the effects wear off, drug metabolites will slowly re-enter your urine and show up on a urine drug test.

Same Day Detox Pills

Same day cannabis flush pills have a somewhat enhanced formula when compared to detoxing liquids. They also achieve purification through more frequent urination; however, they contain a broader number of natural ingredients that aid flushing out the toxins.

For maximum efficiency, ingest the detox tablets by following the instructions provided by the manufacturer. And though their effects may be more potent and longer-lasting, you should also treat them as temporary.

To increase your chances of passing the drug test, we strongly advise that you combine detox pills and drinks.
You should ingest the same-day tablets one day before the test, and a drink 2 hours before testing.

Best Products For Overnight Urine Test

Since weed legalization for recreational and medical use, pre-employment and workplace drug testing became more frequent. As a result of testing becoming omnipresent, the demand for detox products and synthetic urine grew, resulting in counterfeit products flooding the market.

Whether you’re swapping your urine sample for a synthetic one, or performing a body cleanse, you should always use best rated products. Taking products of questionable quality could result in a failed drug test and potential repercussions.

To aid you in your hour of need, we’ll mention some of the best products you can use overnight to pass a urine drug test.

Quick Luck Premixed Urine Kit

Quick Luck is the latest premium synthetic urine from Clear Choice, a well-known and renowned manufacturer of detox products. The company regularly updates their formula to keep up with the lab drug tests. Combined with their easy to use heat activator powder, it’s our #1 choice of synthetic urine currently on the market.

The formula contains urea and uric acid, creatinine, and several B vitamins, along with 11 other chemical compounds that mimic real human urine. The formula is pH balanced and has a gravity specific to natural human urine. It also excludes biocide and any other chemical preserver that may trigger a red flag during drug testing.

Going with Quick Luck to pass a drug test in 24 hours is very straightforward.

  • Pour one-third of heat activator powder into the pre-mixed synthetic urine, monitoring the thermal strip.
  • Keep adding small amounts of heat activator powder until the sample reaches the right temperature.
  • Be careful not to add too much powder, as it may overheat the sample, rendering it useless.
By using chemical heat activator, you can bring synthetic urine to the correct range on short notice.
You can also use it to maintain temperature, by adding small amounts to the urine, as it cools down.

Quick Luck is company’s flagship product, and probably the best synthetic urine formula currently available. If you’re new to this product, you can order one with a practice kit included to try it out before you take the test.

Clear Choice Urine Luck

Quick Fix Plus 3oz

Quick Fix is another pre-mixed synthetic urine, made by Spectrum Labs – a reputable company that offers a full money-back guarantee in case you fail a drug test. Quick Fix is lab-grade artificial urine that contains all the chemical compounds found in natural pee.

The formula is perhaps not as sophisticated as Quick Luck’s, and this brand is bundled with simple heating pads instead of heat activator powder, but it will still pass almost any drug test. We consider it the best budget option for synthetic urine.

To ensure consistent quality, Spectrum Labs tests every batch of Quick Fix urine, before releasing it for sale. That way, they guarantee that you’re getting synthetic urine that will pass a drug test.

Spectrum Labs regularly updates the formula, and the current version is 6.2, which boasts over 99% success rate. The formula features balanced pH values, urine-specific gravity, and correct levels of urea, uric acid, creatinine, vitamins, and other compounds found in human urine.

As we mentioned, Quick Fix comes pre-mixed, with a thermal strip attached to the container. Either heat it in the microwave or use a provided heating pad. If you’re using a heating pad, secure it to the container approximately one hour before you take the test.

Make sure that you don’t overheat container contents, as high temperatures may compromise synthetic urine, rendering it useless.
For maximum efficiency, please adhere to the instructions provided by the manufacturer.

We recommend purchasing Quick Fix only from the official store (link below) to avoid counterfeits (which won’t pass a drug test).

Detoxify Mega Clean

Mega Clean is the most popular and #1 recommended detox drink for drug tests. Marijuana enthusiasts have been buying this cleansing juice for more than a decade, as it’s one of the best products for overnight detox.

The formula contains several crucial elements, like vitamins and minerals, niacin, and several herbal extracts that are known diuretics. For example, Uva Ursi and Burdock root extracts within this beverage will make you urinate more frequently. At the same time, niacin eliminates toxins from your body and lets you pass a drug test in 24 hours.

If you’re less than 24 hours away from a urine drug test, we strongly suggest that you take two bottles of this drink to maximize its effects.
  • Consume one bottle of Mega Clean 24 hours (or ASAP) before the test, preferably with some pre-cleanse tablets.
  • Drink the other bottle of Mega Clean approximately 3 hours before taking a drug test.

You should urinate several times within the first hour of consumption. Mega Clean achieves its purifying effects by making you urinate 3-4 times before drug testing, flushing out the toxins from your urine. After you’ve finished the second drink and peed a few times, your urine should be toxin-free for about 3-4 hours.

Casual smokers don’t require two bottles of Mega Clean, as one bottle has enough potency to deal with intermediate toxin levels. Heavy smokers, however, should adhere to the instruction provided in this section, for maximum results. Here’s a link to the official store:

Quick Clear

Quick Clear is a detox drink made by Spectrum Labs, a renowned company that produces Quick Fix – synthetic urine of premium quality. And much like their artificial urine, this beverage is a reliable budget option if you need to detoxify on short notice.

The product contains 20 liquid ounces of detox drink coupled with eight quick-flush tablets, which increase the effectiveness of the juice. However, unlike regular detox drinks, Quick Clear requires additional steps to detoxify you properly in 24 hours.

  • Before ingesting the detox, you should slowly and comfortably drink 20 ounces of water.
  • Twenty minutes later, take eight quick-flush tablets, and consume the entire bottle of detox drink at a comfortable pace.
  • Please, don’t forget to shake the product before use. After another 20 minutes, refill the bottle with water, and consume.

As with other detox drinks, Quick Clear will make you urinate more than usual. After an hour, you should be able to produce clean urine for drug testing. Please remember that the effects last 4-5 hours, during which you should take the test. Afterward, toxins will re-enter your urine, and you might test positive for drugs.

This product is currently out of stock but you can check other detox drinks we recommend.

Detoxify Instant Clean

Unlike the Mega Clean detox drink, which is produced by the same manufacturer, Instant Clean Herbal Cleanse comes in a slightly different form. In essence, it’s a detox drink in pill form, making it the easiest to use, yet highly effective detox for drug tests.

Instant Clean uses a blend of herbal ingredients in three different tablets, which trigger different responses in the body. The capsules contain diuretic herbs, fruit fibers, vitamins and minerals formulated in such a way that they increase the effectiveness of your natural detox so you can pass a drug test.

  • You detoxify by taking all three capsules, as described in the instructions.
  • Start by ingesting the cleansing-blend pill, which is designed to increase liver and kidney functions.
  • Wait 15 minutes before taking the yellow nutrient capsule that contains crucial vitamins and minerals.
  • After another 15 minutes, take the blue pill, which triggers a metabolic process, to further process and expel the toxins.
  • Take all three capsules with 20 ounces of water each.

Thanks to good quality ingredients, and a large amount of water, you should urinate 3-8 times in the next hour or two. Frequent urination will flush out the toxins from your urine, providing you with 6 hours “clean zone”. Here’s a link to the official store:

Cheap Detox From GNC, Walmart and Amazon

To detoxify correctly, and remove traces of drugs and their metabolites from your body, you’ll need a product that’s powerful enough to do so. There are numerous brands marketed as proper detox, which in reality don’t do anything to flush out the toxins.

Most detox products available at pharmacies and retail stores, such as GNC or Walmart, and e-commerce websites like Amazon, should be avoided. These are low-quality, indistinguishable products that lack the potency to expel drug metabolites from your body correctly. Below are some examples.

Total Eclipse

Like most detoxifying beverages available at GNC, Total Eclipse claims to be able to flush out drug metabolites from your system effectively. The product comes in a 32-ounce bottle and contains over 20 herbal ingredients with additional vitamins, minerals, and creatine.

According to Total Eclipse claims, your urine should toxin-fee after about an hour of ingesting the product, and several trips to the bathroom. In truth, even after following the instruction carefully, the product did not affect toxin concentration levels in urine.

Either their claims are false, or the formula lacks the power to handle THC metabolites properly. In the end, we strongly caution you against the use of this brand.

Rapid Clear

This brand comes as a detoxifying combo, featuring both the beverage and the capsules. Rapid Clear states that their concoction reaches peak effectiveness 2 hours after consumption, and stays effective for up to 8 hours.

The manufacturer listed none of the ingredients contained in the formula, which raises a red flag regarding the quality of the mixture. It’s common practice for good products to list the ingredients contained in the formula.

Still, manufacturer stated that their mixture works best for light and moderate cannabis users. Though we doubt in the brand’s effectiveness, Rapid Clear recommends drinking two bottles of their beverage, to increase the chances of success.

Rescue Detox ICE

Rescue Instant Cleansing Energy is a 32-ounce cleansing beverage, which is not to be confused with Rescue Cleanse. Though they are similar in appearance, they’re incomparable when it comes to quality.

Rescue ICE is advertised as a product suitable for those with high toxin exposure and cannabis users with high BMI. These claims couldn’t be further from the truth, as the formula lacks the power to deal with drug metabolites effectively. Taking this concoction for detoxification is a waste of time and money. And though there are some positive reviews online, we suspect those are also fake.

STRIP Natural Cleanser

STRIP NC is a widely available brand that allegedly stimulates the removal of cannabis metabolites from your body by stimulating bowel movement and frequent urination.

It contains fructose, several vitamins, creatine, fiber, Papain, and Cascara Sagrada. None of these ingredients have clinically proven interactions with drug metabolites, apart from their diuretic and laxative properties.

And though most of THC leaves the body through bowel movement and urine, the product lacks the power to remove residual THC-COOH that’s left behind. The manufacturer does advise you to avoid drinking much water, as it can cause death by water intoxication. Death by water intoxication occurs as often as passing a drug test by relying on STRIP Natural Cleanser.

Optimal Kleen

This THC removal beverage is either a fake or a scientific marvel that effectively cleanses your entire body. The manufacturer claims that Optimal Kleen requires only 60 minutes to take effect, features only natural ingredients, and doesn’t require any preparations.

It’s also the only brand that doesn’t require you to abstain from drug use leading up to the cleanse. That’s a bold claim, considering that some of the best products advise you to refrain from drugs at least 24 hours (72 recommended) before testing.

We consider these claims untruthful and strongly advise against the use of this brand.

Drug Detection Times In Urine

Different substances take a different amount of time to metabolize and expel from the body. To inform you about detection time, we’ve compiled a table.

NicotineUp to three weeks, depending on your exposure
Alcohol12 – 80 hours
Marijuana (THC)Single-use: 2 – 7 days
Chronic use: up to several months (more info)
Heroin (opiates)Two days
MethamphetamineUp to 2 days

How To Pass A Urine Drug Test Using Home Remedies

The number of home remedies and DIY methods for cheating urine tests is astounding. Online chatrooms and internet forums are the primary sources of these allegedly highly effective ways of how to pass a urine drug test in 24 hours with household products.

Sadly, none of these methods work, and some of them are even health-threatening and can have a fatal outcome. Be sure to avoid these home remedies:

Drink A Lot Of Water

This method is the cheapest one, but it’s also the one with the most misconceptions. In other words, you would have to drink incredible amounts of water to get rid of THC metabolites, and that can cause serious health issues. When you drink a lot of water at once, it causes your sodium levels do drop dangerously low, and that can have fatal consequences.

Lemon Juice

Lemon juice is well-known for its cleansing capabilities. It much helps with both digestion and detoxification in general. On top of that, it’s an excellent thing for mood and elevation and even skin improvement. While lemon juice certainly has its benefits, drinking it alone won’t help you in passing a urine drug test in 24 hours.

Sure Jell

This method is based on a belief that large quantities of fiber can keep the toxins from entering your urine. The reality is that fiber won’t affect concentration of THC metabolites in your urine. You can read more about Certo method in our guide.

Baking Soda

Other than turning to salt the moment it hits your stomach acid, sodium bicarbonate has no other uses, except maybe inducing vomiting, nausea, and chronic diarrhea. It won’t help you beat urinalysis.

Drinking Bleach

Mixing bleach with water and drinking it is highly dangerous and may result in death. Drinking a few milliliters of bleach might not kill you but may cause nausea, vomiting, diarrhea, shock or even coma.

Pickle Juice

This is a fantastic home remedy for a hangover, as it replenishes electrolytes that will help you recover. It does have some detoxifying properties, but it isn’t powerful enough to serve as a same-day solution.

Azo Tablets

Azo products improve urinary tract health, but they can’t help you pass a drug test. It can, however, return a false positive, so be careful when taking their products.

Drinking Vinegar

In small quantities, vinegar has some detoxifying properties, though not enough power to work as a same-day cleanse. Drinking larger amounts might make you sick or even cause death.

Aspirin And Zinc

Both zinc and aspirin have more than 202 biochemical interactions with drugs and THC metabolites. None of those interactions include easier removal of said metabolites from the body.

Frequently Asked Questions

How To Pass A Urine Drug Test In An Hour?

One hour is a short period for proper detoxification, so you should consider substituting synthetic pee for your urine.

Most THC removal beverages require at least one hour to take effect, counting the amount of time needed to consume the liquid and urinate afterward.

Synthetic urine, one the other hand, only requires several minutes to prepare, and a maximum of one hour for sample to reach the correct body temperature.

How To Pass A Urine Test In Two Hours?

Besides synthetic urine, you can use detox drinks. Most good brands reach their peak effectiveness an hour or two after ingesting. Two hours is more than enough time for a detoxification, provided that you’re using a good product.

Can You Cheat Same Day Urine Test For Free?

Yes, if you get someone else to buy synthetic urine for you with their money. Or you can call in sick and visit your physician pretending that you’re sick. A doctor’s notice is the only acceptable excuse for not showing up for a drug test.

How Long Does It Take For THC To Leave Fat Cells?

Thanks to its fat solubility, THC easily binds to your body’s fat cells, and stays there until your system metabolizes those fat cells for energy. Depending on your toxin levels, body fat percentage, and metabolism rate, it may take up to several months for THC to leave your fat tissue.

However, you can speed this process up by exercising and eating a healthier diet. Adding lemon juice to your diet is a healthy way of regulating your body fat – and less body fat means less residual THC.

Does Cranberry Juice Help You Pass Urine Tests?

One of the most frequently used home remedies for drug test is cranberry juice. It’s a diuretic meaning it can’t singlehandedly eliminate THC metabolism products from your system.

Cranberry juice helps to prevent urinary tract infections2, but it can’t help you pass a drug test in 24 hours. If you drink a lot of cranberry juice, it will make you urinate more frequently, but alone it isn’t enough for a proper detoxification.

How Much Vitamin B12 Should I Take To Pass A Urine Drug Test?

You can’t pass a drug test with B12 vitamin alone. Vitamin B12 doesn’t affect drug metabolites in your body in any significant way. However, when it comes to urine drug tests, its role is crucial.

Detoxification may dilute your sample, and since urine has a specific yellow color range, it may appear brighter than usual.  To prevent discoloration, you need approximately 50mg of B12 vitamin.

You shouldn’t however worry about this since good detox drinks already contain all necessary vitamins and minerals, as we’ve mentioned earlier in this guide.

Can Niacin Help You Pass Urine Tests?

The popular belief is that Niacin, in combination with Goldenseal, will flush your system free of any toxins. While this is true to a certain extent, absolute elimination of THC with these two substances alone isn’t possible.

On top of that, Goldenseal is exceptionally bitter and probably one of the more disgusting things you’ll ever taste. Furthermore, it is known to cause diarrhea and stomach issues.

The best possible scenario is an “inconclusive” test result. It may come in handy if you’re trying to prolong the testing, but it’s not a viable method for beating urine tests.

How To Flush Xanax Out Of Your System Fast?

Xanax is one of the most prescribed and most addictive benzodiazepines, a substance that stays in your system for up to four days. However, this number may vary depending on several factors, like a person’s age, weight, and frequency of use. Since it’s a slow-releasing drug, detection windows for more frequent users might be longer.

You can flush out Xanax in a relatively short time, depending on your frequency of use, by using good detox products. If you don’t have the time for a proper detox, we advise you to use synthetic urine for passing a urine drug test, as we’ve described in this article.


We conclude that there are ways of how to pass a urine drug test in 24 hours, provided that you use the correct product, depending on your toxin exposure.

If you’re a light or moderate weed user, you can detoxify by taking a good THC detox drink, same day cleansing tablets, or combination of both. Heavy users should use products that are specifically designed for heavy exposure to THC metabolites.

In case you have a urine drug test in 24 hours, light and moderate weed users can try Mega Clean with extra pre-cleanse capsules. Heavy users are highly advised to substitute artificial pee for their urine sample.

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