If you want to see how well NPT urine drug screening devices work then
check the report published January 1999 at
www.health.org/workplce/summary.htm for a comprehensive study. It is
unfortunate that the multiple individual devices tested are de-identified.
However it is easy to see the usual trade-off between sensitivity and
specificity between devices.
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Bruce Campbell
Chemical Pathologist
Sullivan Nicolaides Pathology
ph 07 3377 8672
fax 07 3870 5989
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