Drug Confirmation Barbiturates, Urine (Sendout)
General Information
- Lab Name
- Drug Confrm Barbiturates, URN
- Lab Code
- RUBRBC
- Epic Ordering
- Drug Confirmation Barbiturates, Urine (Sendout)
- External Test Id
- BARBU
- Description
Useful For: Detecting drug abuse involving barbiturates such as amobarbital, butalbital, pentobarbital, phenobarbital, and secobarbital.
Ordering Guidance: Available as a reflex confirmation test only. Refer to Drug Testing for Chronic Prescription of Controlled Substances for available panels.
- References
- Mayo Clinical & Interpretive Information: Barbiturates Confirmation, Random, Urine
- Synonyms
- BABRU, Barbiturates Confirmation Urine - Add-on only
- Components
-
Code Name RUCBB Butalbital by GC/MS RUCBA Amobarbital by GC/MS RUCBPN Pentobarbital by GC/MS RUCBS Secobarbital by GC/MS RUCBPH Phenobarbital by GC/MS RUCBI Barbiturate Interpretation
Interpretation
- Method
Gas Chromatography-Mass Spectrometry (GC-MS) Confirmation with Quantitation
- Reference Range
- See individual components
- Ref. Range Notes
Cutoff Screen Confirmations:
Butalbital by GC-MS: <100 ng/mL Amobarbital by GC-MS: <100 ng/mL Pentobarbital by GC-MS: <100 ng/mL Secobarbital by GC-MS: <100 ng/mL Phenobarbital by GC-MS: <100 ng/mL Interpretation:
The presence of a barbiturate in urine indicates use of one of these drugs.
Most of the barbiturates are fast acting; their presence indicates use within the past 3 days.
Phenobarbital, commonly used to control epilepsy, has a very long half-life. The presence of phenobarbital in urine indicates that the patient has used the drug sometime within the past 30 days.
- References
- Mayo Clinical & Interpretive Information: Barbiturates Confirmation, Random, Urine
Ordering & Collection
- Specimen Type
- Urine
- Collection
-
Collect Random Urine in a preservative-free urine collection container.
- Handling Instructions
Outside Laboratories: Aliquot 5-10 mL urine into a screw-cap vial and refrigerate.
Stability: Refrigerated (preferred): 14 days; Frozen: 14 days; Ambient: 72 hours.
- Quantity
-
requested: 10 mL urine
minimum: 5 mL urine
Processing
- Processing
Aliquot 5-10 mL urine into a screw-cap vial and refrigerate.
Sendouts:- Order Mayo Test: BARBU
- Interfaced: Yes [Interface 601: Department: MARF]
Stability: Refrigerated (preferred): 14 days; Frozen: 14 days; Ambient: 72 hours.
Performance
- LIS Dept Code
- Sendouts Mayo Lab (RF) (MARF)
- Performing Location(s)
-
Sendout Mayo Clinic Laboratories
800-533-1710200 First Street Southwest
Rochester, MN 55901 - Frequency
- Performed: Tuesday, Thursday, Sunday. Report Available: 3-5 days from sample receipt at Mayo Clinic Labs.
- Available STAT?
- No
Billing & Coding
- CPT codes
- G0480
- LOINC
- 20411-5
- Interfaced Order Code
- UOW1757