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HelpBenzodiazepines Confirmation, Random, Urine
Additional Codes
LAB368
Ordering Guidance
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 drug panels and specific requests are available. Call 800-533-1710 or 507-266-5700.
Additional Testing Requirements
If urine creatinine is required or adulteration of the sample is suspected, also order ADULT / Adulterants Survey, Random, Urine in addition to this test.
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Plastic urine container
Submission Container/Tube: Plastic, 5-mL tube
Specimen Volume: 1 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.
3. Submitting less than 1 mL will compromise our ability to perform all necessary testing.
Specimen Type
UrineSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 7 days | |
| Frozen | 14 days |
Reference Values
Negative
Cutoff concentrations by liquid chromatography tandem mass spectroscopy:
Alprazolam: 10 ng/mL
Alpha-hydroxyalprazolam: 10 ng/mL
Chlordiazepoxide: 10 ng/mL
Clonazepam: 10 ng/mL
7-Aminoclonazepam: 10 ng/mL
Diazepam: 10 ng/mL
Nordiazepam: 10 ng/mL
Midazolam: 10 ng/mL
Alpha-hydroxy midazolam: 10 ng/mL
Oxazepam: 10 ng/mL
Temazepam: 10 ng/mL
Clobazam: 10 ng/mL
N-Desmethylclobazam: 10 ng/mL
Flunitrazepam: 10 ng/mL
7-Aminoflunitrazepam: 10 ng/mL
Flurazepam: 10 ng/mL
2-Hydroxy ethyl flurazepam: 10 ng/mL
Lorazepam: 10 ng/mL
Prazepam: 10 ng/mL
Triazolam: 10 ng/mL
Alpha-hydroxy triazolam: 10 ng/mL
Zolpidem: 10 ng/mL
Zolpidem phenyl-4-carboxylic acid: 10 ng/mL
Specimen Retention Time
14 daysPerforming 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 | 97160-6 |
| 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 | 97159-8 |
| 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 | 69050-3 |
Day(s) Performed
Monday through Friday
Report Available
2 to 6 daysForms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.