Preferred test to follow-up presumptive results. For general screening, Barbiturates, Urine Screen with Reflex to Quantitation (2012211) is preferred.
Quantitative Gas Chromatography-Mass Spectrometry/Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Tue, Thu, Sat
New York DOH Approval Status
Transfer 3.5 mL urine with no additives or preservatives to an ARUP Standard Transport Tube. (Min: 1.5 mL)
Specimens exposed to repeated freeze/thaw cycles.
Ambient: 1 week; Refrigerated: 1 month; Frozen: 3 years
Methodology: Quantitative Gas Chromatography-Mass Spectrometry/Quantitative Liquid Chromatography-Tandem Mass Spectrometry.
Positive cutoff: 50 ng/mL
For medical purposes only; not valid for forensic use.
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.
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
80345 (Alt code: G0480)
|Component Test Code*||Component Chart Name||LOINC|
|2012214||Phenobarbital, Urn, Quant||3950-3|
|2012215||Butalbital, Urn, Quant||11071-8|
|2012216||Pentobarbital, Urn, Quant||3926-3|
- Pain Management
- Pain Management, Barbiturates, Quantitative, with medMATCH, Urine
- Pain Management, Barbiturates, with Confirmation with medMATCH, Urine