Benzodiazepine, Conf
Label Mnemonic: BENZOC
Epic Lab Code: LAB368
Downtime Form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Commercial Mail-out Laboratory
5231 RCP
Random Urine
Collection Medium:
Clear top tube
Preferred Minimum: 0.5 mL random urine with no additives or preservatives
Absolute Minimum: 0.3 mL random urine with no additives or preservatives
Rejection Criteria:
Specimens exposed to repeated freeze/thaw cycles. Test cannot be added to a urine sample previously utilized for urinalysis testing (LAB1160, LAB1164, LAB8379).
Turn Around Time:
1-4 days upon receipt at reference laboratory
Reference Range:
Drugs Covered Cutoff Concentrations Alprazolam 5 ng/mL Alpha-hydroxyalprazolam 5 ng/mL Chlordiazepoxide 20 ng/mL Clonazepam 5 ng/mL 7-aminoclonazepam 5 ng/mL Diazepam 20 ng/mL Lorazepam 20 ng/mL Midazolam 20 ng/mL Alpha-hydroxymidazolam 20 ng/mL Nordiazepam 20 ng/mL Oxazepam 20 ng/mL Temazepam 20 ng/mL
Interpretive Data:
Methodology: Quantitative Liquid Chromatography- Tandem Mass Spectrometry

Drugs covered: alprazolam, alpha-hydroxyalprazolam, chlordiazepoxide, clonazepam, 7-aminoclonazepam, diazepam, lorazepam, midazolam, alpha-hydroxymidazolam, nordiazepam, oxazepam and temazepam.

Positive cutoff: 20 ng/mL unless specified below:
Alprazolam 5 ng/mL
Alpha-hydroxyalprazolam 5 ng/mL
Clonazepam 5 ng/mL
7-aminoclonazepam 5 ng/mL

For medical purposes only; not valid for forensic use.

Identification of specific drug(s) taken by specimen donor is problematic due to common metabolites, some of which are prescription drugs themselves. The absence of expected drug(s) and/or drug metabolite (s) may indicate non-compliance, inappropriate timing of specimen collection relative to drug administration, poor drug absorption, diluted/adulterated urine, or limitations of testing. The concentration value must be greater than or equal to the cutoff to be reported as positive. Interpretive questions should be directed to the laboratory.
Quantitative Liquid Chromatography/Tandem Mass Spectrometry
CPT Code:
See Additional Information:
Urine Tests Requiring no Preservatives