How is substance of abuse testing performed?
The 3 most common methods of testing are: ->Breath (used for Alcohol testing) ->Urine Drug ->Hair Drug Test *Breathalyzer results are available immediately while urine and hair drug tests must be sent to the lab for analysis. When a urine sample is sent to the lab, it is first screened using an immunoassay technique (EMIT). If a urine sample is determined to be positive at this step, it is than analyzed by Gas Chromatography/Mass Spectroscopy (GC/MS). GC/MS confirmation is used to double check positive EMIT findings and is the most accurate in use.
