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Test Code BENZUM Benzodiazepines Confirmation, Urine

Important Note

This test is for confirmation testing only. For screening purposes please order a Rapid Drug Screen, Urine LAB676 first before this test.

This test is not able to be ordered in EPIC, but can be ordered in Sunquest.

Additional Codes

 

MAYO Test ID

BENZU

 

Reporting Name

Benzodiazepines Confirmation, U

Useful For

Detecting drug use involving benzodiazepines such as alprazolam, flunitrazepam, chlordiazepoxide, diazepam, flurazepam, lorazepam, and triazolam

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Urine


Advisory Information


1. For situations where chain of custody is required, a Chain-of-Custody Kit (T282) is available. For chain-of-custody testing, order BENZX / Benzodiazepines Confirmation, Chain of Custody, Urine.

2. Additional drug panels and specific requests are available. Call 800-533-1710 or 507-266-5700.

3. If urine creatinine is required or adulteration of the sample is suspected, order ADULT / Adulterants Survey, Urine.



Specimen Required


Supplies: Urine Tubes, 10 mL (T068)

Container/Tube: Plastic, 10-mL urine tube

Specimen Volume: 10 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

Additional Information:

1. No specimen substitutions.

2. STATS are not accepted for this test.


Specimen Minimum Volume

5 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  14 days
  Ambient  72 hours

Reference Values

Negative

 

Cutoff concentrations:

NORDIAZEPAM BY GC-MS

<100 ng/mL

 

OXAZEPAM BY GC-MS

<100 ng/mL

 

LORAZEPAM BY GC-MS

<100 ng/mL

 

TEMAZEPAM BY GC-MS

<100 ng/mL

 

OH-ETHYL-FLURAZEPAM BY GC-MS

<100 ng/mL

 

7-NH-CLONAZEPAM BY GC-MS

<100 ng/mL

 

ALPHA OH-ALPRAZOLAM BY GC-MS

<100 ng/mL

 

7-NH-FLUNITRAZEPAM BY GC-MS

<50 ng/mL

 

ALPHA OH-TRIAZOLAM BY GC-MS

<100 ng/mL

Day(s) and Time(s) Performed

Monday through Saturday

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

80346

G0480 (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
BENZU Benzodiazepines Confirmation, U 90890-5

 

Result ID Test Result Name Result LOINC Value
21441 Nordiazepam-by GC/MS 16228-9
20655 Oxazepam-by GC/MS 16201-6
20656 Lorazepam-by GC/MS 17088-6
20657 Temazepam-by GC/MS 20559-1
20658 OH-Ethyl-Flurazepam-by GC/MS 20532-8
20659 7-NH-Clonazepam-by GC/MS 51776-3
20670 Alpha OH-Alprazolam-by GC/MS 16348-5
20660 7-NH-Flunitrazepam-by GC/MS 51777-1
20661 Alpha OH-Triazolam-by GC/MS 49876-6
20663 Benzodiazepines Interpretation 16195-0
20664 Chain of Custody 77202-0

Analytic Time

3 days

Reject Due To

Hemolysis

Mild OK; Gross OK

Lipemia

NA

Icterus

Mild OK; Gross OK

Other

NA

Method Name

Gas Chromatography-Mass Spectrometry (GC-MS) Confirmation with Quantitation