Tampering - Red Flags

Laboratories know how easy it is to tamper with urine samples to alter results. Labs often test to find out if your sample has been adulterated or diluted. Any of these "red flags" could result in further analysis, rejection of the sample or a request for another specimen under observation.

Urine Color: If the urine sample looks too clear, cloudy, or discolored, the lab might suspect tampering and subject the sample to further scrutiny.

Creatinine: Creatinine is a by-product of human muscular processes and is present in urine. An unusually low creatinine level is indicative of tampering.

Nitrate: Nitrites are found in very low levels in normal urine, except in the case of urinary tract infections. If adulterants are used they will cause high nitrate levels.

Urine Odor: The individual administering the test is supposed to smell the sample for bleach, a popular adulterant.

Urine pH: urine pH is effected when people "spike" their urine with household products (adulterants) or dilute them with detoxifiers.

Specific gravity: Even athletes who consume large amounts of water will still be in normal test ranges for specific gravity. Dilution will cause an unusually low specific gravity, indicative of tampering.

Urine Temperature: Urine must be between 90 and 100 degrees. Most labs will immediately verify temperature. If it's out of range, you will fail the test.

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