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Benzodiazepines Confirmation, Random, Urine

Additional Codes

LAB368


Advisory Information


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



Additional Testing Requirements


If urine creatinine is required or adulteration of the sample is suspected, order ADULT / Adulterants Survey, Random, 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. STAT requests are not accepted for this test.


Specimen Type

Urine

Specimen Minimum Volume

5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 7 days
  Frozen  14 days

Reference Values

Negative

 

Cutoff concentrations:

Alprazolam by LC-MS/MS: 10 ng/mL

Alpha-Hydroxyalprazolam by LC-MS/MS: 10 ng/mL

Chlordiazepoxide by LC-MS/MS: 10 ng/mL

Clonazepam by LC-MS/MS: 10 ng/mL

7-Aminoclonazepam by LC-MS/MS: 10 ng/mL

Diazepam by LC-MS/MS: 10 ng/mL

Nordiazepam by LC-MS/MS: 10 ng/mL

Midazolam by LC-MS/MS: 10 ng/mL

Alpha-Hydroxy Midazolam by LC-MS/MS: 10 ng/mL

Oxazepam by LC-MS/MS: 10 ng/mL

Temazepam by LC-MS/MS: 10 ng/mL

Clobazam by LC-MS/MS: 10 ng/mL

N-Desmethylclobazam by LC-MS/MS: 10 ng/mL

Flunitrazepam by LC-MS/MS: 10 ng/mL

7-Aminoflunitrazepam by LC-MS/MS: 10 ng/mL

Flurazepam by LC-MS/MS: 10 ng/mL

2-Hydroxy Ethyl Flurazepam by LC-MS/MS: 10 ng/mL

Lorazepam by LC-MS/MS: 10 ng/mL

Prazepam by LC-MS/MS: 10 ng/mL

Triazolam by LC-MS/MS: 10 ng/mL

Alpha-Hydroxy Triazolam by LC-MS/MS: 10 ng/mL

Zolpidem by LC-MS/MS: 10 ng/mL

Zolpidem Phenyl-4-Carboxylic acid by LC-MS/MS: 10 ng/mL

Specimen Retention Time

14 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

80347

80339

80368

G0480 (if appropriate)

LOINC Code Information

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

 

Result ID Test Result Name Result LOINC Value
608256 Alprazolam by LC-MS/MS 59615-5
608257 Alpha-Hydroxyalprazolam by LC-MS/MS 16348-5
608258 Chlordiazepoxide by LC-MS/MS 20522-9
608259 Clonazepam by LC-MS/MS 16229-7
608260 7-aminoclonazepam by LC-MS/MS 51776-3
608261 Diazepam by LC-MS/MS 16227-1
608262 Nordiazepam by LC-MS/MS 16228-9
608263 Midazolam by LC-MS/MS 16233-9
608264 Alpha-Hydroxy Midazolam by LC-MS/MS 59590-0
608265 Oxazepam by LC-MS/MS 16201-6
608266 Temazepam by LC-MS/MS 20559-1
608267 Clobazam by LC-MS/MS 59635-3
608268 N-Desmethylclobazam by LC-MS/MS In Process
608269 Flunitrazepam by LC-MS/MS 20528-6
608270 7-aminoflunitrazepam by LC-MS/MS 51777-1
608271 Flurazepam by LC-MS/MS 16231-3
608272 2-Hydroxy Ethyl Flurazepam by LC-MS/MS In Process
608273 Lorazepam by LC-MS/MS 17088-6
608274 Prazepam by LC-MS/MS 17479-7
608275 Triazolam by LC-MS/MS 16232-1
608276 Alpha-Hydroxy Triazolam by LC-MS/MS 49876-6
608277 Zolpidem by LC-MS/MS 72770-1
608278 Zolpidem Phenyl-4-Carboxylic acid by LC-MS/MS 72768-5
608448 Benzodiazepines Interpretation 16195-0