Wrong ways to cheat on your drug test

What Med Techs Know and Test for:


  • If a tester drinks large amounts of water (at least one gallon) before taking a drug test, urine becomes diluted and metabolites from drugs may become undetectable. This may cause the first round of results to be inconclusive, and a second test is necessary.

  • Another method of dilution is adding a drop of water to the sample. Whether ingested or added to a sample, water can make urine look extremely pale and raise red flags indicating that the sample has been tampered with.

Cleansing Products

  • There are an increasing number of products sold that claim to “cleanse the body of toxins” and specifically claim to mask illicit drugs in the system.

  • These formulated “detox” drinks are sold at local nutritional supplement stores and are widely available online.

  • They contain ingredients such as filtered water, fructose, maltodextrin, citric acid, potassium citrate, potassium benzoate, ascorbic acid, red 40, riboflavin, and more.

  • They work by masking the drug metabolites found in the urine. There is often a limited amount of time that these products can effectively conceal drug use (i.e., 3 to 4 hours).

Chemical Adulterants

  • Some of the most common agents that are added to a urine sample include bleach, eyedrops, hand soap, vinegar, table salt, and lemon juice.

  • These chemicals can be easily concealed in small vials and are usually added to the sample when individuals are taking the test unsupervised.

Synthetic Urine

  • Another common method for concealing drug use is to substitute “clean” urine that does not have any trace of illicit drugs.

  • This can be accomplished by asking a friend for a clean sample or by purchasing a clean sample online. (The clean urine is usually refrigerated, and the temperature is a clear sign that the sample is not valid.)

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