What would be considered tampering with a Drug Test?

What would be considered tampering with a Drug Testing?

[sandra]

drug tampering
Clinical pharmacology The inappropriate or illegal alteration of a drug formulated under specified conditions; DT may occur either at the manufacturer or at the pharmacy before its distribution to the consumer. Cf Tylenol™ incident.

see also...

drug testing: adulterating urine samples
Adulterating urine samples, or altering a specimen by changing its concentration, is a common practice that drug abusers use to hide the presence of drugs in their system. Typical adulteration occurs by diluting the urine, either by adding water to their specimen or by drinking large amounts of water to over-hydrate themselves. By diluting the specimen, the concentration of drugs becomes less, sometimes falling below the established cut-off marks for detection. Adulteration tactics also include adding other substances to the urine sample (such as soap, bleach, vinegar, or apple juice), substituting urine from an animal or another person, and many other more elaborate schemes.

Previously, some abusers were able to pass a drug test by using one of these strategies. But new lab technologies are now detecting drugs in samples that were altered and un-testable before. Today, lab tests measuring specific gravity, pH, creatinine levels, and temperature are determining "positive" and "negative" results more accurately than ever.

Here are two of the more popular ways used to cheat a drug test and the usual result:

• Attempt to cheat: A diluted sample, since it will have an abnormally low creatinine and specific gravity level
  Result: The applicant must submit another sample, often directly observed by a same sex collector
• Attempt to cheat: Samples substituted with urine from another source (e.g., a friend, spouse, commercially available urine, even an animal)
  Result: The specimen will not usually pass temperature tests (checked by the collector); those that do pass within the accepted range usually will not pass the specific gravity tests (checked by the lab).

Any attempt to defraud the result---even overdrinking water right before testing has landed people in violation of probation.