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Benzodiazepine and Metabolite Confirmation Blood Test

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The Benzodiazepine and Metabolite Confirmation (LabCorp MedWatch®) screens for and monitors the usage of benzodiazepines and metabolites through a urine sample.


Test Code:


CPT Code(s):



Liquid Chromatography/Tandem Mass Spectrometry (LC/MS-MS)




No special preparation is required.

Test Results:

7 business days. May take longer based on weather, holiday or lab delays.

Walk-In Lab is prohibited from selling LabCorp tests to residents in the following states:NY, NJ, RI, MA, MD

This test screens for the following commonly used benzodiazepines and metabolites:

  • Alprazolam
  • Clonazepam
  • Flurazepam
  • Lorazepam
  • Midazolam
  • Nordiazepam
  • Oxazepam
  • Temazepam
  • Triazolam


What is the purpose of this test?

Order this Benzodiazepine and Metabolite Confirmation (LabCorp MedWatch®) test, which may help determine if an individual has experienced an overdose of benzodiazepines and metabolites or has been abusing these medicines or using them illegally. Benzodiazepines are medicines prescribed to patients suffering from insomnia, seizures, anxiety, depression, and muscle spasms. These medicines are also called tranquilizers, sleeping pills, and muscle relaxants. Although a physician may prescribe these medicines, they are also sometimes used illegally. Common street names for benzodiazepines include "downers," "benzos," "nerve pills," "candy," and "tranks." Chronic abuse of benzodiazepines can lead to addiction. In addition, using these medicines with other depressants like alcohol can be fatal.


What might affect my test results?

Individuals should note that certain medications can cause a false positive result in benzodiazepine urine tests. These medicines include:


  • Tolmetin
  • Naproxen
  • Etodolac
  • Fenoprofen
  • Oxaprozin
  • Sertraline


When should I order a Benzodiazepine and Metabolite Confirmation (LabCorp MedWatch®)?

Individuals may order this test if they have symptoms of an overdose or to determine if an individual has been abusing these medicines or using them illegally. Symptoms of overdose can include:


  • Confusion
  • Slurred speech
  • Loss of muscle control
  • Low blood pressure
  • Slow or shallow breathing
  • Seizures
  • Unconsciousness
  • Heart attack or stroke

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