Amphetamines. Detection thresholds consistent with the available technology have been established for each of the drugs/drug group shown above. These detection thresholds will be used uniformly in the interpretation of all drug tests. In all cases, the testing will utilize a two-tiered technique. Initially, all specimens will be subjected to a screening analysis using FDA approved drug screening reagents. If a specimen produces a positive result at or above the detection threshold, that specimen will then be subjected to a second level confirmation procedure utilizing Gas Chromatography/Mass Spectroscopy technology. Only if both the screen and the GC/MS are positive at or above their respective detection thresholds will the urine be considered positive for that drug(s). If the GC/MS fails to confirm the findings of the original screening procedure, the substance will be reported non-detectable (i.e. (negative)) in the urine.
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Sources: Collective Bargaining Agreement, Collective Bargaining Agreement