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Oxycodone detection by opiate screening

From: Terri
Date: 14 Dec 2005
Time: 23:06:12 -0800
Remote Name: 71.117.64.248

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Twice in the past month clients have screened positive for opiates.  GC/MS lab analysis, however, determined that oxycodone had caused their positive opiate screen results.  I had believed that oxycodone did not cross-react with opiate screens.  What is the likelihood of such cross-reactivity?  Both clients claimed to have taken a single dose of oxycodone approximately 24-36 hours prior to testing.  We will be switching to oxycodone-specific testing to avoid this dilemma.  Do you have any idea what the time ranges for detecting oxycodone in urine are (at 300 ng cutoff)?

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