Below we will describe best ways to beat any drug test, even if you have less than 24 hours to do it. And we back up our evidence with scientific facts.

All of our recommendations are legal and safe for health. We will be talking about cannabis/marijuana and the tetrahydrocannabinol (THC) in this article, but these methods work for many types of drugs: cocaine, crack, opiates, methamphetamine.

Types of tests our recommendations will work with: pre-employment, random, military, probation, parole, DOT and non-DOT tests.

Passing Probability Calculator

Use the world’s only data-driven marijuana drug test passing probability calculator in order to determine your odds of passing a urine drug test. With over a decade of research and development, this is the only application that can provide an accurate answer to how long cannabis can be detected in your system:

Marijuana Drug Test Calculator

The calculator graphs your Passing Probabilities vs. Days for untampered and diluted/detoxed urine. View Patent US 13/866,015 for more information.

What You Will Learn

  • How to pass urine, hair follicle, saliva drug test even if you have 12 – 24 hours only.
  • Ways to detox naturally in a week.
  • What home remedies are effective and what are just urban legends

Table of Contents

Urine Drug Test

How to Pass a Urine Test in 24 Hours

Method 1: Dilution + Aspirin

Dilution method is hands down, the easiest and cheapest way of beating a drug test. Simply put, this method involves drinking a lot of water in a bid to take the concentration of THC metabolites in your urine to way below the detectable levels.

What’s so good about this method is that it can be used as a same-day solution. And this means that you can toke late into the night and still pass the test the following day.

However, the dilution method is a complex process and it is easy to fail it.

What you’ll need

Electrolyte powder

This supplement consists of sodium and magnesium. It helps in keeping your blood’s electrolytes at the required levels to prevent electrolyte imbalance. It also keeps your urine’s specific gravity level in check.

Creatine ethyl ester supplement

This helps raise the creatinine levels above the cutoff mark especially if you are struggling with lower levels of this urine component.

Vitamin B2 or B12 supplement

This gives urine its natural color.

Step-by-Step Instructions
  • 3 hours before the test take 10 grams of creatine ethyl.
  • 3 hours before the test take 200 milligrams of vitamin B2.
  • Drink 1000 milliliters of electrolyte solution every hour for three hours before the test.
  • Take 2 aspirin tablets four to six hours before the test.
  • Take a home urine test before you go to the test center.

Method 2: Using someone else’s pee

As disgusting as it sounds, one of the easiest ways to pass a urine drug test is to use someone else’s.

The person who you choose should be a non-drug taker, or it will defeat the purpose. You can use the male or female urine – the labs will not detect the difference.

Please note, this can be difficult to do if the test is supervised.

How to Collect and Store Urine

As long as you have a good candidate, collecting the urine is the easy part. It is advised that you collect it in a squirty bottle so that it actually sounds like you are peeing when you are in the toilet.

Since the urine has to be a certain temperature, you can’t do this the night before and carry it to the test center.

Ask your friend to come with you and get them to pee into the bottle just before you go in. No one is allowed on the premises with you, so they will have to wait outside.

If they can’t come with you, ask them to pee just before you leave to go to the test center. You can keep it warm by resting it on the heating pad provided in the kit.

Put the bottle inside your underpants near your genital region. To use it, follow the same procedure as the synthetic urine, you can read about it here.

Likelihood of Being Drug Tested by Ethnicity


How to Pass Urine Drug Test in a Week or More

Not all drug tests are sprung on you out of the blue, in some cases you are given warning. You are more likely to pass when you have the time to prepare. Here are some tips to assist you:

Method 1: Using Synthetic Urine

Synthetic urine is just as the name states, its fake pee that people can use to pass a drug test. It smells the same, the color is the same, and it includes the same ingredients such as creatinine, metabolites, uric acid, and urea.

It is guaranteed to work 100% of the time because they are undetectable by drug tests.

How to use it

Synthetic urine comes as a powder that you will have to turn into a mixture, here are the instructions.

  • Mix the powder with water.
  • Use the equipment provided to get it to the right temperature.
  • Place it into a heating pad.
  • If you need to hide it do so.
  • Do a home test before going to the real test.
  • Bring at least 30ml to the test center.

The biggest challenge is getting it into the test center and into the bathroom where you will take the test, here are some suggestions even if you are supervised.

  • Wear a pocket belt around your waste and slot the container into the pocket.
  • Tape the container to the inside of your thigh.
  • Women can insert the container into their vagina.
  • Use a fake penis.

Method 2: Natural detoxification

The only way to pass a urine drug test is to avoid drugs in the first place. If you’ve been smoking cannabis all along, however, abstaining for a day or two won’t increase your chances of passing the test by a greater margin.

This is because THC is highly fat-soluble. This means that it gets trapped in the fat cells where it is released into the blood and taken into the liver for metabolism and later into the kidneys for excretion through urine at a constant rate over time.

That being said, natural detoxification involves getting rid of the THC stored in the fat reserves. People take a different amount of time to detox naturally ranging from a few weeks to several months.

This is because this method depends on how long an individual has been taking marijuana (and how much) and their weight.

All in all, people with a fast metabolism, low BMI, and lower water retention will be able to eliminate the THC in their body much faster.

Natural detoxification is more or less a fat loss program, and you’ll, therefore, need to follow a proper diet and exercise regularly.

Drinking at least 2 liters of water- water is one of the most important components of a weight loss regimen. This is because it works as a natural appetite suppressant thereby making the body to metabolize fat

Eating leafy greens – the most straightforward way of losing weight is eating fewer calories than your body is using. This doesn’t mean starving. Substituting high-calorie ingredients with fruits and vegetables adds volume to your dishes without adding lots of calories

Lemon juice – lemon juice added to warm water promotes quick weight loss by promoting digestion and boosting the rate of metabolism

Saying no to junk food and red meat- junk food is often packed with loads of calories. These excess sugars and fats add to your fat layers thereby increasing the storage surface for THC. Consequently, it becomes harder to lose weight and to shed off stored THC. Therefore, it’s essential to replace junk with vegetables, fruits, legumes, whole grains, and nuts as you try to detox

Healthy fiber- fiber acts as a natural suppressant by reducing appetite. This means that it can help you minimize calorie intake and this will help in losing weight. Healthy high-fiber foods include legumes such as black beans and kidney beans, nuts such as peanuts and almonds, bread such as rye and wheat bread, and fruits such as mangoes, pears, apples, and berries

If you have more than a couple of days before you need to test, getting a good workout can help to rid your body of toxins. Just about any workout is beneficial, but cardiovascular exercise is preferred. You want to get your heart rate up and work up a sweat.

Method 3: Activated Charcoal

Activated charcoal is charcoal that has been activated to enhance the chemical reaction produced when it is ingested.

It is a popular cure for treating poisoning because it has been scientifically proven to absorb harmful toxins.

Activated charcoal is something you should add to the detoxification process mentioned above.

Activated charcoal is available in pill form; you will need at least one week before your test to experience its full benefits. This is how you take the pills:

  • Stop taking drugs.
  • Take 10 grams three times a day 2 hours before you eat and drink a lot of water.
  • Take 30 grams of activated charcoal for two days in a row.
  • For the remaining five days eat foods that are high in fiber.
  • You can check whether it is working by taking home urine drug tests.
  • Take some more activated charcoal on the day of the test.

How to Increase Your Chances of Passing a Urine Drug Test

If you are feeling nervous about your urine drug test, fear not, here are a few suggestions to increase your chances of passing the test:

  • Take the test in the afternoon: If you can choose what time you take your test, make sure you take it in the afternoon instead of first thing in the morning. This will ensure that your urine is not as concentrated.
  • Use a home testing kit: Home testing kits are relatively accurate, if you take a test before the real thing and you pass, you are not going to be so nervous when it comes to the actual test.
  • Keep going to the toilet: You want to dilute your urine as much as possible, but don’t go over the top with this or it could raise suspicions. Drink a lot of water so that you keep going to the toilet.
  • Calm down: Take a few deep breaths before you go into the test center if you appear nervous it is going to set alarm bells ringing. The technicians might be all nice and smiley, but they have been trained to look for suspicious behavior.
  • Don’t smoke or drink: You don’t want anything to ruin your chances on the day of the test, so no matter how nervous you feel, don’t smoke or drink.
  • Don’t take any vitamins or medications: Unless you are on medication prescribed by your doctor, don’t take any tablets on the day of the test. Just to be on the safe side, take your prescription medication with you to the test center, but don’t let them know unless they ask.
  • Avoid toxins: Stay away from anywhere that will expose you to toxins for 48 hours, you don’t want anything to ruin your chances of passing the test.
  • Eat a clean diet: One week before your test, refrain from eating junk and greasy foods. Stick to healthy foods such as vegetables, fruit, and whole-wheat products.
  • Don’t eat a lot: On the day of the test, don’t eat too much, have a small meal beforehand.
  • Increase your water intake: The longer you can do this the better, but for at least two days, drink four 16-ounce glasses of water per day. Water helps to detoxify the body, don’t drink it all in one sitting, sip it throughout the day.
  • Speed up your metabolism: You can speed up your metabolism by exercising, a leisurely walk isn’t going to do the trick, you need to get your heart rate going. Start exercising a week before the test and stop a day before.

How the Test is Conducted

A drug testing laboratory will have a separate bathroom prepared for drug testing; the procedure is as follows:

  1. The person performing the test will give you a specimen cup.
  2. You will have to leave all your belongings in another room while the test is taken. You will also need to remove any items in your pockets.
  3. In some circumstances, a nurse of the same sex will accompany you to the bathroom while you take the test to ensure that you are abiding by the rules. If you are going to be supervised, they will explain the reasons for doing so.
  4. The technician will provide you with a moist cloth to wipe your genital area.
  5. Urinate into the cup. The sample requires a minimum of 45 milliliters of urine.
  6. Place a lid over the cup and hand it to the technician.
  7. The technician will then take the temperature of the sample to make sure it is in the proper range.
  8. It is important the urine sample does not leave the room until it has been packaged and sealed.

What Are They Looking For

A urine drug test is done to detect the presence of metabolites/residues that remain after the use of marijuana. These metabolites are THC-COOH and not THC as most people think.

After handing over your urine specimen to the collector, the first thing that the lab guys do is to verify the validity and reliability of the urine. The essence here is to detect any form of substitution or adulteration. STV is done by observing the following characteristics of urine;

Color: Typically, normal urine varies from yellow to amber in color and should not be cloudy. The variation is brought about by things such as the concentration of urine and recent diet.

Temperature: Under normal circumstances, the temperature of the urine should be the same as your body temperature, that is, around 98.60F (37C) on average.

Creatinine levels: Creatinine is a chemical by-product of normal muscle metabolism. Normal random creatinine levels in the urine range from 40mg/dL to 300mg/dL in males and 37mg/dL to 250mg/dL in females.

Specific gravity: Specific gravity (also known as specific density) refers to the ratio of the density of urine to that of water. The specific density of water is 1.000 while that of an adult’s urine falls anywhere between 1.002 and 1.030 assuming that the kidneys are functioning normally.

pH: The normal pH of urine ranges from 4.5 to 8.0. Values outside this range may make the examiner suspicious.

Adulterants: An adulterant refers to any foreign substance added to a specimen with the main intention of manipulating the results.

In case the lab expert finds an issue with one of the above key components of urine in your sample (color, temperature, and creatinine levels), you may be required to collect another specimen in an observed environment this time. Otherwise, the specimen is ready for immunoassay screening.

After that, the urine is tested for the concentration of the drug metabolites. It must be below the cutoff level. Here are the cutoff levels for 5, 9, 10 and 12-panel laboratory drug tests.

Cutt-Off Levels

Drug Cutoff Level(ng/ml)
Marijuana metabolites (THCA) 50
Cocaine Metabolites (Benzoylecgonine) 150
Phencyclidine (PCP) 25
Amphetamine 500
Methamphetamine 500
Codeine/Morphine 2000
6-Acetylmorphine (6AM or Heroin) 10
Hydrocodone 300
Hydromorphone 300
Oxymorphone 100
Oxycodone 100

If the concentration case, results are reported as negative, and no further action is taken. On the other hand, testing companies must do a confirmatory test on all specimens that test positive to eliminate the chances of a false-positive. That’s when your sample is sent to the lab for a GC-MS test.

How to Pass a Hair Drug Test

In case you have forgotten, a hair follicle drugs test involves a few strands of hair being cut from your head and tested for the presence of drugs over 90 days.

It is a very accurate test capable of detecting the length of time you have been using a specific drug, and when you stopped using it.

The hair follicle test can also determine the quantity of the drug taken. This type of drug test is not used often because it is so expensive.

Research has found that the hair follicle test is five to 10 times more effective than the urine drug test. This amounts to approximately 85% of users who failed a hair follicle test, passed a urine test.

The accuracy of the hair follicle test is why it is the preferred drug test for employers. Marijuana is detectable in the hair for several months.

Method 1: Natural Cleansing

The most effective way to clear drugs out of your system is to do so naturally. The only downside to this is that it depends on how much time you have.

The longer you don’t take any drugs the better, but the average time is 110 days. After which you will also need to get a haircut.

Method 2: The Macujo Method

The Macujo method involves a seven-step cleaning process; unfortunately, you will have to stop smoking for it to work.

But once your test results come back negative, you can spark up again. Don’t be put off by how strange this method is, all you need to know is that it works

The majority of people who use this method pass, so give it a go. Here is how to perform the Macujo method:

  1. Dampen the hair with warm water, make sure that it is not soaking wet.
  2. Massage Heinz vinegar into the hair and scalp.
  3. Massage some Clean and Clear into your hair and scalp.
  4. Put a shower cap over your head and leave the mixture in your hair for half an hour.
  5. Wash your hair using Nexus Aloe Rid Shampoo.
  6. Rewash your hair using Tide laundry detergent.
  7. It is recommended that you repeat this process at least five times for it to work.

How the Test is Conducted

  1. The test either takes place in a hospital or whoever is administering the test will send the hair to a lab for testing.
  2. The test is supervised, it is also important to mention that no matter how many times you wash your hair, if you use styling products or if you dye your hair, it will not affect the accuracy of the test.
  3. The technician will cut between 100 and 120 strands of hair from the crown of your head. To avoid bald patches, they will collect it from different areas on the crown.
  4. You will not get away with not taking a hair test just because you are bald; the hair is taken from other parts of your body.
  5. Once the hair is collected, it is wrapped in foil and then placed in an envelope and sent to the lab for testing.
  6. If the results are negative, you will get them back within 24 hours.
  7. If the results are positive, you will get them back within 72 hours.
  8. If the test comes back inconclusive, it is taken again.
  9. The test results are delivered to the organization that requested the test.

A hair follicle test is difficult to manipulate although not impossible. Since the hair is cut directly from your head, you can’t use someone else’s hair. You are not left alone with the sample, so there is nothing you can put in it to change the results. Either way, there is no scientific evidence to support that this is even possible. What you eat or drink will not change the results.

Mouth Swab(Saliva) Drug Test

As mentioned earlier, a mouth swab drug test involves saliva being removed from the mouth and tested for drugs. It is typically used by employers because it is quick to administer.

With a mouth swab test, cannabis can be detected for up to 72 hours. Variables such as weight, height, metabolism, the amount and frequency that you smoke will all influence on these 72 hours.

THC is eliminated from saliva in 12 hours with people who only smoke once a month.

How to Pass Mouth Swab Drug Test

  • Drink lots of water: This keeps you hydrated and helps the fluids in your mouth to keep moving.
  • Eat a high-fat meal: If it is possible to eat a high-fat meal about an hour before your test, this can help reduce the drug metabolites in your saliva. The fat will absorb the metabolites from your bloodstream so that less of them manage to reach your saliva.
  • Chew some ice: Some have found it effective to chew an ice block just before the test. The ice will cleanse your mouth and also gets rid of any lingering traces of marijuana which may still be in your saliva. Of course, this is most effective if you have not smoked for at least twenty-four hours before the test.
  • Chew some gum or mints: A similar method involves chewing gum or mints which will dilute your saliva, and increase your chances of a negative test result. In general, the idea is to keep your mouth clean by brushing your teeth and chewing gum, mints or ice.

Method 1: Use Mouthwash

When it comes to detoxing your mouth before a swab test, the best method is to use mouthwash. There are a variety of effective products available such as the following: Using Listerine Mouthwash to Pass a Saliva Drug Test

Method 2: Hydrogen peroxide

This can be used as a cleansing mouthwash. You would need to rinse your mouth thoroughly for about three minutes with hydrogen peroxide an hour or less before the test. After you have rinsed, do not brush your teeth or drink anything until you have had the swab test.

How the Test is Conducted

  1. A small instrument such as a cotton swab or a brush is used to wipe the side of the cheek area.
  2. It is then rubbed onto the gums and left underneath the tongue for a couple of minutes.
  3. The instrument is then inserted into a test tube containing a clear liquid. If the liquid changes color, you have failed the drug test.
  4. The test is also administered using an absorbent strip that changes color if drugs are detected in your system.

Home Remedies That Will Not Work

As you probably already know, there is a lot of ridiculous information on the internet about home remedies and household products that will help you pass a drug test.

This is a serious issue, and should not be taken lightly, as your life’s on the line if you fail.

So here are some of the most popular home remedies that will help you fail a drugs test:


It is important to mention that niacin is so toxic that hundreds of people end up in hospital after taking it in hopes it will help them pass a drug test. There are several different theories as to why niacin works to flush the body of THC.

One of the most common is that it helps to remove THC from fat cells through the process of vasodilation. However, there is no scientific evidence to verify this claim.

Certo (Sure Jell) Fruit Pectin

It is believed that Certo, which is a type of fruit pectin covers the lining of the bladder and stomach to prevent THC from being released into the urine.

This gives you a short amount of time to take a test without drugs being detected in your system. Many users have reported that this method works for them, but many people have also reported that it doesn’t work. Another problem is that there it is not known how much fiber is present in Certo, this means that there is no way to determine how much you need to take for it to work.

There is no scientific evidence to support the claim that Certo will help you pass a drug test.

Cranberry juice

Cranberry juice makes you pee; it contains pectin, niacin, zinc, and aspirin which apparently help in passing drug tests.

May we add that this is true for aspirin and not the rest. One of the main ingredients in cranberry juice is salicylic acid because it is one of the ingredients used to make aspirin, people have jumped to the conclusion that it can help you pass a drug test.

One of the problems with this theory is that it is not known how much salicylic acid is in cranberry juice, and to pass a drug test, you will need to consume a specific amount.

There is also no scientific evidence to support this claim.

It is also believed that the presence of zinc in cranberry juice can help to pass a drug test. However, research has concluded that zinc does nothing to alter the results of a drug test.

Apple cider vinegar

Yes, apple cider vinegar is a natural detoxing agent; but it certainly won’t help you to pass a drug test if used as a same-day solution.

It involves consuming a spoonful of apple cider vinegar and a glass of water, you will then need to drink a gallon of water 3 hours before the test, and then urinate as much as possible.

It works by eliminating traces of metabolites in the urine. However, there is no scientific evidence to prove this.

For the apple cider vinegar method to work, it takes up to 8 weeks to boost fat metabolism and activate the detox process.

So, unless you are going to stop smoking for 8 weeks, this is not a reliable method to help you pass a drugs test.

Azo pills

Azo products are used to treat urinary tract infections; they are available in pill or juice form. Its active ingredient is cranberry which is one of the reasons why people assume it can help you to pass a drugs test.

One liter of the juice contains 7 milligrams of salicylic acid, and research has concluded that drinking cranberry juice increases salicylic levels in the urine.

Because acid is its main metabolite, this has been compared to taking aspirin, and aspirin has been found to help produce negative test results.

One of the side effects of taking azo pills is that it turns the urine into a bright orange color. Since this is not the natural color of urine, and the technicians are aware of this, you will fail the test whether drugs have been found in your system or not

There is no scientific evidence to support the claim that Azo products will help you pass a drug test.

Baking soda

We all know that baking soda is used in the home to absorb smells, but one thing it does not do is absorb toxins. It is believed that baking soda causes the stomach to absorb drug metabolites which result in vomiting.

Apparently, this is how the toxins from the drugs are released from the body. It also alters the pH levels of the urine which will get you an immediate fail anyway.

Meth users have reported that baking soda has helped them to pass a drug test; however, this is because meth is a base, and THC-COOH is acidic.

Since the content of urine is acidic, there are no problems when it comes to eliminating meth. This is one of the many reasons why baking soda will not help cannabis smokers pass a drug test.

Sweating THC out

Since THC is stored in fat cells, it is believed that cannabis users can sweat THC out of their system.

It is believed that this method works because it is the bloodstream that carries THC, and it is the blood that produces some of the water produced when sweating.

Therefore, as the sweat gland blood capillaries filter the water, it excretes drug metabolites via sweat.

It is true that toxins are removed from the body through sweat; however, there is no scientific evidence to suggest how much THC is eliminated through sweating.

Detox tea

Green tea is a very healthy drink, and research shows that it detoxifies the body. But it does not rid the body of THC.

The belief is that green tea burns fat cells which stimulate the release of THC through urine.

There is no scientific evidence to support this claim and marijuana smokers who have tried this method have reported that it does not work.

Pickle juice

One of the main ingredients in pickle juice is vinegar; the belief is that due to its acidity, pickle juice neutralizes the THC metabolites so that it is not detected in a urine test.

The vinegar solution is either ingested or it is added directly to the urine sample. The ingestion method involves drinking a lot of water, which means your urine is diluted and you will fail the drug test.

Although vinegar is used as a natural detox method, it doesn’t work on the same day.;

Potable Aqua

Potable Aqua is a water purifying agent; they are typically used by hikers and campers. It is believed that by drinking water containing potable aqua, it cleanses the urine of THC.

Another method is to add potable aqua to a gallon of water and pour it into your urine sample.

There is no scientific evidence to verify this claim. Additionally, it may be there is the possibility that THC metabolites were not eliminated by the potable aqua but as a result of the amount of water consumed.

Also, several people have reported that they failed a drug test as a result of using this method.


Goldenseal is a medicinal herb that is commonly used to treat inflammation, respiratory infections, and digestive disorders.

It is believed that Goldenseal prevents The buildup of THC metabolites in the urinary tract passages which helps to eliminate them from the body resulting in negative test results.

It is unclear whether you can pass a drug test using Goldenseal.

Eye drops

Apparently, if you add a few drops of Visine to your urine sample, it will dilute the drug metabolites as well as mask THC metabolites to create a false negative.

Although there is some truth to this method, it is not advisable. By the way, it is important to mention that you should NEVER TAKE EYE DROPS ORALLY!

If you manage to get away with using this method, there is a possibility that it might reduce the drug metabolites concentration to manipulate the test results.

The bottom line is that even if this does work, being able to put anything into your urine sample, is virtually impossible.


Midol is a pain reliever most commonly used to relieve menstrual cramps. It is argued that because Midol contains caffeine which makes you pee, it helps to remove drug metabolites from your system.

There is no scientific evidence to suggest that Midol helps to rid the body of THC.

It is also believed that two of the main ingredients in Midol, Acetaminophen and Pyrilamine maleate not only assist in ridding the body of THC metabolites, but it also helps to manipulate the drug test equipment.

Again, there is no scientific evidence to support this claim.

Drinking alcohol

Alcohol is said to detoxify the body and remove THC from the bloodstream. This is because it makes you pee a lot which will dilute your urine.

This theory is based on the fact that THC is highly soluble in alcohol as opposed to water. It also hinders the release of testosterone which slows down the fat burning process.

This method is unreliable because it is unclear how long it takes for this process to work.

It is also believed that drinking alcohol causes weight loss by making you feel too full to eat.

If alcohol is consumed often, the body will protect itself against starvation by using stored fat as an energy source.

This process causes the excretion of THC molecules from the body. However, research has concluded that this method is only effective if you consume 8 ounces of alcohol per day.

You will also need to do so continuously so that your body can adjust if not, it will have the opposite effect, and you will end up gaining weight instead of losing it.


It is believed that zinc attaches itself to the THC metabolites which creates a large molecule that the kidney is not able to filter, and so instead it exits the body when you take a dump.

There is no scientific evidence to suggest that zinc attaches itself to THC metabolites, and even if this were the case, it would still be able to pass through the kidneys.

Another myth concerning zinc is that when taken, it hides the THC metabolites so that they are not detected in a test.

The majority of scientific studies into zinc and drug testing have concluded that zinc does not interact with the metabolites, but it can play a role in manipulating the actual test.

Factors That Influence Test Results

How often do you use drugs: The more you use drugs, either in amount or frequency, the higher the chances of a positive drug test result.

What drugs are you using: The body breaks down certain drugs faster than others, so the type of drugs you take will influence your test results.

The purity of the drug will also determine whether it is detected or not. Some drugs are cut with other products meaning they are not as strong as others.

Total body fat: No matter how little or often you use, fat cells store THC. What this means is the more fat cells you have, the more likely you are to get a positive drug test result.

Health and metabolism: The metabolic process breaks down everything that enters the body. The higher your metabolism, the faster drugs are broken down and eliminated from your system.

This process also depends on gender, genetic makeup, the amount of exercise you do and age. Evidence also suggests that certain foods can alter metabolism and effect whether drugs are detected or not.

Frequently Asked Questions

Can second-hand smoke show up on a drug test?

A study conducted by the Institute of Legal medicine in Germany found that after placing non-marijuana and marijuana smokers in a well-ventilated space for three hours, there was THC present in blood and urine samples; however, the levels were not high enough to fail a drug test.

What states require drug testing for welfare?

15 states in America require drug testing for people applying for welfare. These regulations apply specifically to those wanting Temporary Assistance for Needy Families.

The laws in each state are different: Arizona, Florida, Georgia, Michigan, Utah, Wisconsin, West Virginia, Tennessee, Oklahoma, Missouri, Mississippi, North Carolina, Alabama, Arkansas, Kansas.

What is a false positive drug test?

Although a rare occurrence, drug tests can produce inaccurate results where prescription or illegal drugs are detected in a urine or blood sample despite the fact that the individual has not taken any drugs.

How accurate are home drug tests?

Home drug tests are fairly accurate, and drugs will show up in results if you have been taking them. If a home test is positive, you are almost certain to get a positive result for a lab test. However, external factors can affect the accuracy of a home drug test. These include:

  • Urine temperature
  • Contaminants in the sample
  • Whether you are on any other medication

What happens if you fail a drug test?

The consequences of a failed drug test will depend on why the test was taken. If you are on probation or parole, and abstaining from drugs is one of the conditions, a failed test could send you back to jail.

If it was for employment purposes, you might get a chance to have a second test after a certain period.

There is also the possibility that you will have to take regular drug tests to remain employed.

Does a failed drug test go on your record?

If you fail a drug test when you are on parole or probation, the test results will be added to your criminal record.

However, if you fail a drug test at work, the results are kept confidential even when your new employer is requesting a reference from your old employer, they can not divulge such information.

How long do drug test results take?

If your drug test results are negative, expect them back within 24-48 hours. Positive results take slightly longer, and you should add three days or more to the 24-48 hours. You will know if you have failed a drug test if you don’t get the results back within 48 hours.

Do they check for nicotine/steroids/HIV?

No, employers use drug tests to determine whether their employees are using illegal drugs.

Can you fail a drug test by touching or smelling weed?

Since smelling or touching weed does not involve inhaling it, you will not fail a drug test.

Can a drug test detect synthetic weed?

The answer to this question is yes and no because sometimes they show up and sometimes they don’t.

The main reason for this is that there are over 140 different types of synthetic weed making it difficult to determine which one will be detected.


How Accurate Are Home Drug Tests Compared To Lab Tests?

The home drug tests are as accurate as the laboratory drug screens are(emit drug tests). Confirmatory GC MS drug tests are more accurate than home drug tests.

How Long Do Drug Test Results Take?

Negative results are usually received within 24 hours; however, a positive screen will require further testing that may take a few days up to one week

Will One Hit Fail A Urine Test?

No. One hit of weed is not enough to fail a urine drug test

How To Pass A Non DOT Drug Test?

The methods of passing non-DOT drug test are the same. Dilution and Aspirin for urine test and Macujo or Jerry J method for a hair drug test

Does Niacin Work For Drug Tests?

No. We busted this myth in another post. Niacin cannot help you to pass, but it can cause damage to your liver. Do not use it.

Does Fake Urine Work?

Yes, using fake urine can help you to pass a drug test, but this is not legal. Use reliable and legal methods described above.

If You Pass A Home Drug Test Will You Pass A Lab Test?

Sure. However, if you need to pass a confirmatory GC MS then using a home drug test is not reliable.

How Long For A Skinny Person To Pass A Drug Test?

It depends on the amount of marijuana consumed and the smoking frequency. If you smoke one in a while, you should be clean in a week

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