Handbook of Drug Monitoring Methods pp Cite as. This chapter discusses interpretation of results obtained by screening and confirmation testing affected by all of these factors and when applicable describes solutions to these problems. Unable to display preview. Download preview PDF. Skip to main content. Advertisement Hide.
Skip to search form Skip to main content. Oral fluid testing for drugs of abuse: positive prevalence rates by Intercept immunoassay screening and GC-MS-MS confirmation and suggested cutoff concentrations. Seiter and Melissa K. Comparison studies of the effectiveness of oral fluid testing versus urine testing are needed to establish scientifically reliable cutoff concentrations for oral fluid testing. We present the results of the first large scale database on oral fluid testing in private industry.
Handbook of Drug Monitoring Methods pp Cite as. A confirmed positive drug test reassures all the parties involved in the drug testing process that the reported positive result is an analytical true positive and as such is evidence that the individual has been exposed to the drug. That individual may not be a drug abuser and may have a valid alternative explanation for the positive result. In this context, an analytical true positive result may be a clinical false positive. There are many causes other than illicit drug use which can produce positive analytical results.
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