Will Bleach Clean Your Urine? (5 Dangers of Using It)

A female nurse holding a jar filled with urine to do drug testing

Did you ever consider using bleach to clean your urine and pass a drug test? Think again. Not only is this method highly dangerous, but it’s also ineffective and illegal.

For the purposes of this article, we’ve conducted extensive research and consulted with specialist doctors to explore the science of how bleach interacts with urine.

We’ll also discuss the hazards of using bleach as a means to pass drug tests and provide practical guidance on how to pass a drug test successfully.

Quick Summary

  • Abstaining from drug use is the safest way to pass a drug test.
  • Understanding drug test timelines can help ensure a clean urine sample.
  • Using bleach for passing a drug test carries significant health risks and legal repercussions.

The Science Behind Bleach and Urine Interaction

A doctor mixing two chemicalsBleach contains sodium hypochlorite, a powerful disinfectant that can kill bacteria and viruses on surfaces and remove stains from clothes and skin [1].

Some might think that its ability to break down chemicals could also help eliminate drug metabolites in urine, thus producing false negative results on drug tests.

However, the science behind bleach and urine interaction tells a different story.

Sodium hypochlorite, the active ingredient in bleach, reacts with ammonia in urine, producing chloramine gas [2]. This reaction can cause coughing, wheezing, and difficulty breathing when inhaled.

Moreover, bleach’s effects on drug metabolites are not guaranteed to help you pass a drug test, as it may alter some metabolites but fail to mask others.

Is it sensible to risk the health and legal consequences for such an uncertain method? We’ll delve deeper into this issue.

Effects on Drug Metabolites

A doctor showing a thumbs down while holding a urine sampleWhile it’s true that bleach may modify certain drug metabolites, it is not a reliable method for successfully passing drug tests. In fact, it might even result in disqualification if testing labs detect the presence of bleach in your urine sample.

Researchers have observed the reaction between bleach and MDMA, a common drug found in ecstasy, which resulted in a stable reaction product called N-chloroMDMA [3]. However, this reaction does not guarantee that all drug metabolites will be altered or undetectable.

Advanced testing techniques employed by drug testing laboratories, such as Liquid Chromatography-Mass Spectrometry (LC-MS) and Gas Chromatography-Mass Spectrometry (GC-MS), can easily detect the presence of drug metabolites and reaction products in urine samples. 

So, using bleach in an attempt to pass a drug test is not only dangerous but also unreliable, as labs can detect tampering and still identify drug use.

“We run into problems when people try to force vomiting because they put themselves at risk for aspiration. Aspiration is the inhalation of either secretions from the back of the throat and nasal cavity or stomach contents into the lower airways of the lungs. This can potentially lead to an acute, chemical lung injury resulting from the inhalation of the contents.”
Arizona Poison and Drug Information Center

5 Dangers of Using Bleach to Pass Drug Tests

A jar filled with urine and a syringe on the sideAs we’ve seen, using bleach to pass drug tests is not only ineffective but also highly hazardous.

The dangers of this method include severe health risks, such as chemical burns, organ damage, and even death, as well as legal consequences for tampering with a drug test.

Rather than resorting to bleach, we’ll examine safer alternatives and provide tips for ensuring a clean urine sample.

1. Health Risks

Ingesting or inhaling bleach can lead to severe injury or fatality. Bleach is a highly corrosive substance that should not be ingested or used on the body, as it can cause severe irritation and damage to the:

  • Throat
  • Esophagus
  • Stomach
  • Intestines

Ingesting bleach can also lead to respiratory problems, organ damage, electrolyte imbalances, and, in extreme cases, death.

Clearly, the health risks associated with using bleach to pass a drug test far outweigh any potential benefits.

2. Legal Consequences

A hands of a person inside a prisonTampering with a drug test by utilizing bleach or any other adulterant is considered illegal in many jurisdictions. It is deemed a form of fraud or deception and can result in criminal charges, fines, probation, or even imprisonment.

The applicable penalties may vary depending on the jurisdiction and can range from fines to probation or even imprisonment.

If the drug test is being conducted for employment or legal purposes, the use of bleach to attempt to pass the test may result in termination of employment, revocation of professional licenses, or other undesirable outcomes. 

Using bleach to pass a drug test can have severe legal repercussions in court proceedings, depending on the jurisdiction and the particulars of the case. Consequences can range from monetary fines to probation or even incarceration.

3. Detection Methods Used by Testing Labs

A male doctor looking at a microscope

Testing labs are well-equipped to identify adulterants like bleach and use advanced techniques to detect drug use.

We’ll examine the various techniques labs use to identify tampering in urine samples and their advanced testing methodologies for analyzing drug metabolites and reaction products.

4. Identifying Adulterants

Testing labs can detect bleach in a urine sample through the following signs of tampering:

  • Color changes in the sample
  • Presence of unusual odors
  • Presence of particles
  • Abnormal pH levels

If any of these signs are detected, it is an indication that bleach has been added to the sample.

Labs use various techniques to detect adulterants in urine specimens, such as:

  • Analytical methods
  • Immunochromatographic strips
  • Adulteration test strips
  • Spot tests

These methods make it difficult for individuals to tamper with their urine samples undetected, further emphasizing the futility of using bleach to pass a drug test.

5. Advanced Testing Techniques

A doctor using a microscope

Drug testing laboratories use advanced techniques to detect a broad range of drugs and their metabolites in biological samples.

Some of these techniques include:

  • Fourier Transform Infrared Spectroscopy (FTIR)
  • Liquid Chromatography-Mass Spectrometry (LC-MS)
  • Gas Chromatography-Mass Spectrometry (GC-MS)
  • Enzyme-Linked Immunosorbent Assay (ELISA)

These techniques are known for their accuracy and reliability in detecting drug use.

FTIR, LC-MS, and GC-MS are commonly used to detect the presence of drug metabolites in urine samples. ELISA is a technique used to detect the presence of specific molecules in a sample by using antibodies.

These advanced testing techniques make it nearly impossible for individuals to tamper with their urine samples and pass drug tests undetected.

Alternative Methods to Pass Drug Tests

A top view of laboratory equipment and urine sample

While using bleach to pass drug tests is dangerous and unreliable, there are alternative methods that drug users may consider. Detox drinks, synthetic urine, and dilution are some options, though their effectiveness varies.

We’ll search and examine these alternatives in detail, including their potential pitfalls.

Detox Drinks

A woman pouring a detox drinkDetox drinks are beverages that contain ingredients purported to flush out toxins from the body. They are sometimes used to help pass drug tests, though their effectiveness may vary.

Some recommended detox drinks claim to assist individuals in passing drug tests.

Relying on detox drinks to pass a drug test is not a foolproof method and may not provide the desired results. Moreover, the science behind these drinks is often unclear, and their effectiveness in helping users beat drug testing has not been conclusively proven.

Synthetic Urine

Synthetic urine is a laboratory-created liquid that is formulated to imitate the characteristics of real human urine. It is commonly used to pass drug tests, though its effectiveness may vary.

Synthetic urine contains components such as:

  • Uric acid
  • Creatinine
  • Urea
  • Ammonia
  • Sulfates

These components help synthetic urine mimic real urine.


A doctor performing a drug testDilution is a technique employed to pass drug tests by consuming large quantities of water or other fluids to flush out toxins from the body.

While diluting a urine sample may reduce the concentration of drug metabolites, making it more challenging for testing labs to detect them, it is not a foolproof method.

Testing labs can detect dilution by analyzing markers such as specific gravity, creatinine levels, and pH levels.

Therefore, while dilution may help in some cases, it is not a guaranteed method for passing drug tests and may still be detected by testing labs.

Understanding Drug Test Timelines

Knowing how long drugs stay in your system can help you plan for a drug test and ensure a clean urine sample. The duration of drugs in the system can vary depending on the type of drug.

Generally, drugs can remain in the system for up to 72 hours.

Being aware of the type of drug test that will be conducted and the substances that will be checked for can assist in planning for the test and deciding the most suitable course of action.

It is imperative to abstain from drug use for a minimum of 72 hours before the test and make healthy lifestyle choices such as drinking ample amounts of water and engaging in regular exercise.

Related Articles:


How Do Drug Testing Labs Detect Bleach in Urine Samples?

Drug testing labs can detect bleach in urine samples through visual and chemical indicators, such as color changes, unusual odors, particles, and irregular pH levels. These indicators can be used to determine if someone has attempted to mask the presence of drugs in their system.

How Long Do Drugs Stay in Your System?

Drugs can stay in your system for up to 72 hours, depending on factors such as the type of drug, dosage, metabolism, and other individual characteristics. For example, cannabis can be detectable in urine for up to 30 days in chronic users, whereas cocaine might only be detectable for a few days.

Can Bleach Really Help You Pass a Drug Test?

Drinking bleach to clean your urine is not a reliable method for passing drug tests and can pose serious health risks and legal consequences.

Choosing safer, more reliable methods not only safeguards your health but also increases your chances of successfully passing drug tests without resorting to hazardous and ineffective tactics.

For those in search of an alternative that is both safe and effective, we recommend considering synthetic urine kits like Sub Solution.

These kits are specifically designed to mimic natural urine, containing all the essential components needed to pass a lab test. Unlike risky home remedies, synthetic urine kits are lab-tested and widely considered a reliable option for simulating a clean urine sample.


  1. https://www.ncbi.nlm.nih.gov/books/NBK214356/
  2. https://doh.wa.gov/community-and-environment/contaminants/bleach-mixing-dangers
  3. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC81503/ 

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