Enzyme Multiplied Immunoassay Technique (EMIT)

The EMIT is a relatively simple and inexpensive technique. It is also the most likely to produce a "false positive" result. Pre-employment drug screens typically first involve an EMIT, although it is not unheard of to surprise a subject with a GC/MS up front. Unfortunately, there is no standard procedure to expect in private employment. If you pass the EMIT, you will not be given the more expensive and accurate GC/MS. If you fail the EMIT, expect the GC/MS confirmation test, which is extremely sensitive.

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