How to Pass a Drug Test – Your Comprehensive Guide

Drug screening tests are popular for many high-responsibility jobs and legal proceedings. Whether you’re a habitual or a recreational drug user, you must’ve wondered, “How to pass a drug test with weed in your system?”.Or maybe “How can I get screened in my drug screening test?”.

The good news is that with some drug detox products, you can get through any type of drug test.  In this article, we are going to discuss all drug testing. We’ll explore different drug testing methods such as urine, hair follicle, saliva, blood tests, and proven solutions to clear them.

How to Pass a Drug Test?

Understanding Drug Tests

Let’s first understand how the traces of drugs get into your system. When you ingest drugs, the metabolites enter your bloodstream and get deposited in your hair. As the hair grows, these metabolites get trapped in your hair shaft, making them easier to detect.

Further, because of passive diffusion, metabolites are secreted into the saliva through salivary glands. In addition to this, during excretion, the drugs are metabolized in your liver for a longer period.

A report by WHO found, which is the highest among any other drugs. Do you know how long does weed stay in your system? According to Healthline, it takes 2-24 hours in blood and saliva, while it may last up to 90 days in urine.  Just like a weed, other drugs have a different detection window in the hair follicles, saliva, blood, and urine, drug testers take these samples to predict your last drug usage.

Types of Drug Tests

Now that we know about drug testing let us explore the types of tests in detail. Knowing about the procedure of these tests can help you understand the best way to pass a drug test.

Urine Tests

It is one of the most common methods to detect drugs in one’s system. In this test, a sample of 30 ml urine from the candidate is taken. With the help of chromatography-mass spectrometry methods, the traces of drugs are found in the urine.

Hair Follicle Tests

For a hair follicle test, a hair strand of nearly 1.5 inches from the scalp is collected as the sample. The principle of chromatography coupled with mass spectrometry is used to separate the elements in the hair sample. And that’s how the drugs are detected. It is quite effective in detecting long-term drug use.

Saliva Tests

In the case of a saliva test, a swab is placed under the candidate’s tongue. And the saliva is extracted from the mouth.  This sample is then stored and further processed to separate the components, such as toxins or other contaminants present.

After dilution and filtration, the results are documented. This method is used because it is very convenient and non-invasive.

Blood Tests

Generally, some amount of blood is collected from the candidate’s veins. The collected sample undergoes an extraction process in which other proteins and other blood components are studied to map the presence of toxins.

The Importance of Preparation

The types mentioned above of drug tests are most commonly done for legal and professional reasons. Here are some reasons for which you may have to appear for the test:

  1. Random Testing
  2. Workplace Policy Compliance
  3. Treatment Programs
  4. Professional Licensing
  5. DUI/DWI Cases
  6. Athletic Competitions

It is quite important to pass your test as it may lead to some dire consequences, including job loss and legal repercussions. You can get screened and achieve successful results with proper preparation and high-quality detox products.

Methodologies for Different Drug Tests

Passing a Urine Drug Test

A urine test is more prevalent in workspaces and legal proceedings as it is non-invasive, convenient, and affordable. This test can provide valuable insights into drug usage patterns for various drugs.

Wondering, how long does it take to pass a drug test, that involves studying your urine sample? Let us understand it with the help of the following table:

Drug Detection Period in Urine
Marijuana Up to 30 days
Cocaine Up to 4 days
Opiates Up to 4 days
PCP Up to 7 days
Amphetamines Up to 4 days

How to Prepare for a Urine Drug Test?

Preparation for a urine drug test varies as per the level of exposure to weed or any other intoxicants. Let us discuss some of the ways you can test negative on the test day.

Use THC Detox Methods

THC detox is one of the most common ways people resort to while eliminating the THC metabolites from their urine. Even though some home remedies like hydration and exercise work in some rare cases, they are unreliable.

Especially when your exposure to intoxicants is high and you don’t have enough time before the test. Therefore, using supplements for detoxification is a viable option.

Detox Drinks

These kinds of drinks are commonly used by people to flush the toxins out of their body. It typically contains vitamins, minerals, and other natural ingredients that help in the detoxification process.

Out of many options out there in the market, Detoxify Mega Clean detox drink is one of the most reliable options for detoxification. With its powerful ingredients like Taurine and Milk Thistle Extract, it can clean up THC metabolites and support the overall digestive system.

Detox Pills

The detox pills enhance the elimination of toxins by enhancing the elimination process. As you urinate, more toxins are flushed out of your body, making your urine devoid of toxins before the test day.

Not every detox pill can work for different exposure to drugs. However, Toxin Rid pills stand out as an exception for this, it’s a flexible option matching any THC exposure because of the variety of programs.

Discontinue Drug Use for Some Days

When you discontinue drugs a few days before your test, you allow your body to metabolize and eliminate the toxins. In addition to this, this trick also helps to reduce the concentration of drug content in your urine.

This means it may take less time for you to expel all the drug traces from your urine. If you are wondering how long do you need to be clean to pass a urine drug test?  Generally, 1-2 days before the test could increase your chances of testing negative.

Stay Hydrated

Irrespective of your toxin exposure, it is one of the most important things to be considered. Drinking water in adequate quantities expels the substance accumulated by prescription medications, over-the-counter drugs, and herbal remedies. These substances can further cross-react reagents ending up making you test positive in your test.

Buy Synthetic Urine

This is a no-time solution to pass a urine drug test. This involves sneaking a synthetic or fake urine sample to the test center and handing it over to the observer as your urine sample. All you need is to heat the urine to a normal urine temperature. The fake urine sample can easily pass as it has almost all the qualities of an original urine sample. Let’s take a look at them.

  • Creatinine levels: The urine test samples are tested for their creatine levels. The synthetic urine contains synthetic creatinine in quantities as same as the original one. This avoids suspicion in your sample.
  • Specific gravity: Synthetic urine product manufacturers can mimic the concentration of solutes in the solution. This closely resembles the density and specific gravity of the original urine. As no drug traces are found in the sample, you could pass your test easily.
  • Uric acid: The presence of uric acid can distinguish a fake sample from the original one. Thankfully, the amounts of uric acid are also matched in the fake urine ensuring you get screened in.
Characteristics Powdered Urine Kit Quick Fix Synthetic Urine Quick and Clean Synthetic Urine
Form Powder Liquid Liquid
Preparation Time Requires mixing with water Ready to use Ready to be used
Shelf Life Longer shelf life as powder Limited shelf life once opened       Long shelf life
Ingredients Synthetic components Synthetic components Synthetic components
Creatinine Levels Included Included Included
Specific Gravity Set up to the right value May be adjusted Set up to the right value
Heating Mechanism May require an external heating source Require an external heating activator Requires external heating
Ease of Use May require precise mixing Ready to pour Ready to pour

Passing a Hair Follicle Test

The hair follicle test is common in workplaces and legal proceedings as it has a wide detection window. It tracks the drug’s traces for as long as 90 days. Plus, a hair follicle test is harder to manipulate with a fake hair strand. Let us take a look at drug detection time frames in common drugs detected in the hair follicle test.

Drug Detection Period in Urine
Marijuana Up to 90 days
Cocaine Up to 90 days
Opiates Up to 90 days
PCP Up to 90 days
Amphetamines (ecstasy, meth, and molly) Up to 90 days

Now that you know, how long do drugs stay in hair? It is important to acknowledge that complete drug abstinence for 90 days before the test is required if you want to pass your hair test naturally.

How to Pass a Hair Follicle Drug Test?

Unlike urine drug tests, a hair follicle test is a bit tricky. A hair strand accumulates metabolites over time, which means a single hair strand could tell the pattern of drug usage at a specific time. Further, due to the small size of hair strands, it’s harder to alter them.

So how are you going to get screened in, right? Some detox shampoos can help you with this. With some powerful formulations, they get deep into your hair and eliminate product buildup, pollutants, and THC metabolites.

By multiple and precise applications of detoxifying shampoos, you can easily remove toxins from your scalp.

For this purpose, Old Style Aloe Toxin Rid and Zydot Ultra Clean shampoos are effective. Note that Zydot Ultra Clean is an additional product that multiplies Old Style Aloe Toxin Rid’s effectiveness. Here are some pros and cons of these shampoos:

Old Style Aloe Toxin Rid
  1. It aids in retaining hair’s moisture.
  2. The users can pair it with different products easily.
  3. Natural ingredients such as Lavender Oil and Jojoba Oil protect hair from damage.
  1. It may need multiple applications for people with long hair.
  2. This could be a bit expensive.
Zydot Ultra Clean
  1. It works rapidly, often after a few minutes of its application.
  2. Using Zydot Ultra Clean is very easy.
  3. When combined with Old Style Toxin Rid, it could work even in case of high drug exposure.
  1. It may cause slight discomfort to individuals with pre-existing scalp issues.
The Macujo Method

A special hair rinsing method can be used to increase your chances of clearing your hair drug test. It was invented by Mr Mike Macujo. This involves a 7-step procedure that cleanses your hair thoroughly. Along with Old Style Aloe Toxin Rid and Zydot Ultra Clean shampoo, you need a couple of other materials such as Heinz Vinegar, Tide, Clean & Clear (Pink).

  1. Wet your hair properly with lukewarm water.
  2.  Pour some Heinz Vinegar on it.
  3. Without washing off the vinegar, apply Clean & Clear shampoo on it.
  4. Allow it to sit in your hair for 30 minutes.
  5. Wash your hair with Old Style Aloe Toxin Rid shampoo for a few minutes.
  6. Then wash your hair with Tide detergent.
  7. Lastly, apply some Zydot Ultra Clean shampoo and wash with lukewarm water.
  • Always use gloves and goggles to avoid contact with shampoo with your eyes.
  • Once you wash your hair with these products, use a conditioner.
  • Avoid aggressive scrubbing on your scalp to take out the product buildup.

Passing a Saliva Test

The saliva tests are done using (LC-MS/MS). With the help of the devices, it becomes easier to track the history of drug usage. It’s preferred by employers and legal authorities because it’s difficult to tamper.

If you are a regular smoker, you should know that the mouth swab drug test weed timeline is just 1 hour to 24 hours. But for others, the detection window may be different. Let us understand it with the help of the following table.

Drug Detection Time
Marijuana (THC) 1-24 hours after use
Cocaine 1-2 days after use
Amphetamines 1-2 days after use
Opioids 1-2 days after use
Benzodiazepines 1-2 days after use
Methamphetamine 1-2 days after use
Phencyclidine 1-3 days after use

The drug abstinence window varies from one drug to another. Therefore, in general, it’s suggested to completely abstain from any drugs at least 48 hours before the test date.

How to Prepare For a Saliva Test?

Now, you may be thinking about how to pass a saliva drug test with home remedies, right? Well, there are some ways to pass a drug test with home remedies but they may not be very effective in each case. Let’s discuss them.


Drinking plenty of water could dilute the drug metabolites in saliva. In some cases, it could help you get through the mouth swab test.


Some oral-rinse products with specific ingredients may react with alcohol molecules and may help in removing their traces from saliva.

Vinegar rinse

By rinsing your mouth with vinegar, you can mask some drug metabolites in your saliva. This may help you test negative on the test.

Though these remedies are temporary they can help you get screened in. However, they are not completely reliable. To increase your chances of clearing the test, you may use some detoxifying mouthwashes. One such popular and reliable detox mouthwash called Toxin Rid Rescue Wash Mouthwash could be an ideal choice in this case.

The Toxin Rid Rescue Wash Mouthwash is a blend of ingredients that can dilute your saliva and make it toxin-free for a longer time. This unique formulation has been widely used in mouth swab tests and has been successful for many users across the globe.

  1. Removes THC from saliva.
  2. Neutralizes oral pH.
  3. Masks mouth odors.

How Do You Pass a Mouth Swab Drug Test With Toxin Rid Rescue Wash?

Here are some instructions that can help you pass the oral swab drug test the first time.

  1. Take ⅓ of the liquid in the bottle cap.
  2. Swish it in your mouth for 1-2 minutes.
  3. Hold the liquid in your mouth for 2-5 minutes.
  4. Spit it out.
  5. Repeat the process.

The best part about Toxin Rid Rescue Wash is that it starts working within a few minutes.

Passing a Blood Test

Because of the high potential of false positives and high expenditure, blood tests are not very popular for drug screening tests. Additionally, due to shorter detection windows, they may not be very reliable. The detection times of various drugs in blood are as follows:

Drug Detection Time
Marijuana (THC) 1-2 days
Cocaine 1-2 days
Amphetamines 1-2 days
Opioids 1-2 days
Benzodiazepines 1-2 days
Methamphetamine 1-2 days
Phencyclidine 1-3 days

As you can see, it can only detect drugs consumed within 1-3 days, which is why urine drug tests are more common. Let’s compare the blood test detection window with other drugs.

Drug Blood Test Saliva Test Urine Test
Marijuana (THC) 1-2 days 24 hours to a few days 3 days
Cocaine 1-2 days 1-2 days 2-4 days
Amphetamines 1-2 days 1-3 days 2-4 days
Opioids 1-2 days 1-2 days 2-3 days
Benzodiazepines 1-2 days 1-2 days 1-6 weeks
Methamphetamine 1-2 days 1-2 days 3-5 days
Phencyclidine 1-3 days 1-3 days 7-14 days

How to Prepare for a Blood Test?

If you want to clear your blood test in a few days, you must pay close attention to the following:

  • Drink plenty of water.
  • Avoid drugs.
  • Get plenty of sleep.
  • Exercise.
  • Eat a balanced diet.

These tips can also be helpful in case of urine and mouth swab tests.

A popular blood detox method is to drink lemon juice at regular intervals. The lemon juice can clean up your digestive tract and even balance the pH levels in your body. Here’s what you should do:

  1. Take a cup of warm water.
  2. Add 2-3 drops of lemons in the water.
  3. Drink it in the early morning before your first meal.

Debunking Common Myths

Secondhand smoke

Myth: You may test positive if you have inhaled second-half smoke you may test positive in your test.

Fact: Second-hand smoke may add some traces of smoke in your system but it is highly likely to make you test positive in your test.

Poppy Seeds

Myth: Eating foods with poppy seeds can cause a positive result in the test.

Fact: The foods with poppy seeds do contain opiates. However, the level of these opiates in poppy seeds is less, therefore, they are highly unlikely to be detected in the test.


Myth: Bleaching can clean your hair shaft like detox shampoos.

Fact: Bleaching could remove some surface-level contaminants but not the drug traces deep down.


Myth: Aspirin can mask THC metabolites, making them undetected in the drug test.

Fact: Using Aspirin before your test can not alter the chemical composition of THC metabolites. Hence, it can’t mask the drug traces.

Frequently Asked Questions

Does Fake Pee Work at Quest Diagnostics and LabCorp?

It all boils down to the quality of the product you have purchased. For instance, using a product that could mimic the original urine in terms of specific gravity temperature and composition, may pass at Quest Diagnostics and LabCorp.

How to pass a urine drug test naturally?

If you want to pass your urine test without any supplements, make sure you abstain from any kinds of drugs at least 15-25 days before the test. Also, drinking plenty of water may help you get through as well.

What Will Show Up in a Urine Drug Test?

A urine test can accurately detect a wide range of drugs ranging from Alcohol, Marijuana, and Cocaine to Methamphetamine and Benzodiazepines.

How Accurate are Home Drug Tests?

It depends on the type of test you are conducting. With some detection kits, you may opt for a home drug test in a urine test and get accurate results. But it’s not the case with a blood drug test.

What Is the Most Common False Positive in a Drug Test?

One of the common false positives that may occur in a drug test is the cross-reaction of medications with reagents. Antidepressants, Pain relievers, and Antibiotics could lead to false positive results.


So far, we have discussed different types of drug tests We have talked about some reliable ways to pass them, at length. It is important to acknowledge the detection windows for each drug and product that can help you get screened. Additionally, it’s also crucial to follow the steps in the right manner to ensure success in your tests. Before choosing any product shared above, always conduct your research.