Thursday, July 23, 2009

Urine Adulteration, other substances

In addition to the actions taken by individuals and the chemicals already discussed, we will conclude our discussion of ways to beat a urine drug test with the measurement of urinary pH as an indicator of tampering and the detection of oxidizing agents:

pH tests for the presence of acidic or alkaline adulterants in urine. Normal pH levels should be in the range of 4.0 to 9.0 (a range of 3.0 to 11.0 is used to indicate urine substitution; urine sample with pH values below this range or above this range are considered physiologically unlikely). Values outside of this range may indicate the sample has been altered. This test is an indicator of urine sample tampering but does not prove that tampering occurred. In addition, this test does not identify a potential substance used to mask drug use.

Oxidants/PCC (Pyridinium Chlorochromate) tests for the presence of oxidizing agents such as bleach and hydrogen peroxide. Pyridinium chlorochromate (sold under the brand name UrineLuck) is a commonly used adulterant . Normal human urine should not contain oxidants or PCC.

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