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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Do Lunesta, Luvox And Prazosin Show False Positive Results For Oxazepam?

Is there anything that can show up as a false positive Oxazepam in a urine drug screen. I have a patient that is on Lunesta, Luvox, Prazosin, Divalporex and Prevacid. That came up positive for Oxazepam. She swears that she has not taken anything else.
Tue, 16 Jun 2020
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General & Family Physician,  's  Response
Hi,

Sertraline (an SSRI) has been shown to cause false positive results in benzodiazepine urine tests. While also an SSRI, fluvoxamine (Luvox) has not been associated with false positive benzodiazepines urine tests. Other medications that can cause false positives includes NDAIDs (e.g., naproxen), so I would suggest inquiring about use of over the counter pain relievers.

If there is doubt about usage of benzodiazepines, gas chromatography-mass spectrometry should be used to confirm the positive test results.

Hope this helps answer your query. Let me know if I can be of further assistance.

Regards,

Dr. Aaron Shapiro

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Do Lunesta, Luvox And Prazosin Show False Positive Results For Oxazepam?

Hi, Sertraline (an SSRI) has been shown to cause false positive results in benzodiazepine urine tests. While also an SSRI, fluvoxamine (Luvox) has not been associated with false positive benzodiazepines urine tests. Other medications that can cause false positives includes NDAIDs (e.g., naproxen), so I would suggest inquiring about use of over the counter pain relievers. If there is doubt about usage of benzodiazepines, gas chromatography-mass spectrometry should be used to confirm the positive test results. Hope this helps answer your query. Let me know if I can be of further assistance. Regards, Dr. Aaron Shapiro