Originally posted by PepperElf
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First, individuals initial the label on their own bottles. The bottles are boxed into batches, and the test administrator begins a chain-of-custody document for each batch. The chain-of-custody requirement continues in the lab as well. People who come in contact with each sample and what exactly they do to the sample are written on the document. All samples are kept with the batch they came in to preserve the chain of evidence.
After arrival at the lab, the batch is separated into its individual samples. The samples then undergo an initial immunoassay screening (using the Olympus AU-800 Automated Chemistry Analyzer). Those that test positive for the presence of drugs at this point undergo the same screen once again. Finally, those that come up positive during two screening tests are put through a much more specific gas chromatography/mass spectrometry test. This test can identify specific substances within the urine samples.
Even if a particular drug is detected, if the level is below a certain threshold, the test result is reported back to the commander as negative.
DoD labs are equipped to test for marijuana, cocaine, amphetamines, LSD, opiates (including morphine and heroin), barbiturates and PCP. But not all samples are tested for all of these drugs. Every sample gets tested for marijuana, cocaine and amphetamines, including ecstasy. Tests for other drugs are done at random on different schedules for each lab. Some laboratories do test every sample for every drug.
Commanders can request samples be tested for steroids. In this case, the samples are sent to the Olympic testing laboratory at the University of California at Los Angeles.
So yes, the DOD tests the samples individually. The samples are sent to the labs in batches and the samples remain together, but the samples are actually tested individually.
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