Common Adulterants For Urine Drug Screening

Drug testing is more common, and if you want to get a job in a reputable company, you must pass the urine drug screening. Urine drug screening checks the presence of an illicit substance in a person’s urine. If the urine contains an illegal substance, then the drug test report is marked positive, and if it does not contain any illicit substance, then it is marked as a negative test report.

Urine drug screening check for opiates, cocaine, weed, THC, PCP and other illicit substances. The urine drug test can detect past one to seven-day substance abuse. The urine drug test uses specimen validity testing and GC/MS method to find illicit substances.

To beat the urine drug screening, people use several urine adulterants. Here in this post, we shared the most common contaminants for urine drug screening. These contaminants can make urine test result negative. However, many labs have advanced techniques and technology to detect these urine adulterants.

common adulterants for urine drug screening

common adulterants for urine drug screening

Synthetic urine:

Synthetic urine is the most common adulterant used to beat urine drug screening. Synthetic urine is artificial urine that mimics real urine. Synthetic urine has urea, uric acid, pH, creatinine, ammonia and other ingredients found in natural human urine.

Here are some fake pee brands that people use to pass urine tests.


The next common urine adulterant is water. People add water to urine to dilute the urine concentration. Adding water can dilute the concentration of the drug. Most of the time, adding water can lower the concentration of marijuana in urine. In addition, diluted urine can makes the urine test result inaccurate. But it is bad practice to add water to urine for a drug test. Most labs use Sample validity testing (SVT) that finds substitution, adulteration and dilution of the urine.

Urine additive:

A urine additive is a liquid that neutralizes the toxins in the urine. Urine additive like clear choice spike additive kills drug toxins in the urine and cleans the urine.


Salt is also one of the urine adulterants that people add urine to beat the urine test that uses EMIT method for screening. The urine has a salty and bitter taste. It is because it contains urea, uric acid and ammonia. However, advanced laborites like LabCorp, Concenta, CRL and others that use SVT and GS/Ms techniques can easily detect urine adulteration.


Bleach is also a common urine adulterant used to mask the MDMA drug. But adding bleach to the urine can lead to strong negative reading, which makes the sample suspicious. The urine test that uses GS/Ms detect the presence of bleach in the urine


PCC is a potent oxidizing agent that is present in many synthetic urines that are used for beating the EMIT urine screening test. The labs that use GS/MS techniques can easily detect the presence of PCC in the urine.

Potassium nitrite:

potassium nitrite is Nitrite Containing Agent that can change the drug test result. However, with the help of the GS/MS technique lab can detect the potassium nitrate present in the urine.

Hydrogen peroxide and peroxidase:

A mixture of hydrogen peroxide and peroxidase can manipulate the urine test result. Some synthetic urine contains a mixture of hydrogen peroxide and peroxidase to cheat the urine test. The mixture of hydrogen peroxide and peroxidase can hide traces of illicit substances like LSD and opiates.


Glutaraldehyde is an agent that can hide the traces of illicit drugs like coke, Benz, marijuana, Amphetamine and other street drugs. Some synthetic urine contains Glutaraldehyde agents to beat the EMIT urine test.

Zinc sulfate:

zinc sulfate is a less-known urine adulterant that can manipulate the urine test result. EMIT urine tests are not practical for detecting zinc sulfate urine adulterants.

People use these most common urine adulterants to beat the urine test.


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