What Effect Does Vinegar Have on a Drug Test?


Quick Answer

The effect of vinegar on drug tests is to alter the pH level of a sample which makes it ineligible for testing. Substances added to urine, such as vinegar and lemon juice, increase the acidity of urine and lower its pH to a level below the normal range. Even diluting the vinegar with water to mask its presence can bring the pH level of a urine sample outside the normal range.

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Full Answer

Laboratories that analyze samples for drug tests can usually detect substances that alter the pH level of a urine sample or any attempts to mask test results. Laboratories can even detect attempts to skew results by consuming large amounts of water to produce diluted urine samples. Most laboratories do not submit samples for further testing after recognizing some abnormality in the sample or attempts to alter test results. Companies that require drug tests for employees or schools that require them for athletes to compete may either require the candidate to submit another sample for retesting or reject the candidate for failing the test.

Some sources claim that consuming large amounts of vinegar causes an increase in a person's metabolic rate and the consumption of fat cells where some drugs, such as the THC component of marijuana, are stored. These sources claim that the increased metabolism of fat cells flushes traces of the drug out of the user’s system, and enables him to submit a sample that is eligible for testing and capable of passing. As of 2015, there is no scientific data to support such claims.

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