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A drug test (also often toxicology screen or tox screen) is a technical analysis of a biological specimen, for example urine, hair, blood, breath, sweat, or oral fluid/saliva—to determine the presence or absence of specified parent drugs or their metabolites.
The walk-and-turn test is composed of two phases: the Instruction Phase and Walking Phase. During the test, the individual is directed to take nine steps along a straight line. The individual is supposed to walk heel to toe, and while looking down at a real or imaginary line, count the steps out loud. The test subject's arms must remain at ...
However, the United States Supreme Court ruled in Skinner that random drug testing is permissible for employees in safety sensitive positions. Justice Kennedy, speaking for the majority, wrote: [T]he Government interest in testing without a showing of individualized suspicion is compelling.
For this reason, officer candidates must undergo a single scope background investigation (SSBI) before being appointed. In addition, officer candidates must pass a written exam, undergo drug and medical examination, polygraph examination, a physical fitness test, pre-security screening and structured interview during the pre-appointment phase. [27]
Implemented in 2014, the National Registry rule requires all Medical Examiners (ME) who conduct physical examinations and issue medical certifications for interstate CMV drivers to complete training on FMCSA's physical qualification standards, pass a certification test, and demonstrate competence through periodic training and testing.
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A Drug Recognition Expert (DRE) is a law enforcement officer trained in a scientifically validated method to identify people whose driving is impaired by drugs other than, or in addition to, alcohol. All DREs follow the same 12 step procedure called a Drug Influence Evaluation (DIE), to purportedly determine which category of drugs is causing ...
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