Drug Monitoring, Barbiturates, Quantitative, Urine
- Laboratory
- Quest Diagnostics
- Test code
- 39387
- Specimen
- Urine
- Fasting
- Not stated
- LOINC
- 11071-8, 11230-0, 19695-6, 3926-3, 3950-3, 54247-2
Laboratory assay overview
The barbiturate class of drugs are substances that are traditionally classified as sedatives. Their principle uses are to calm the patient, produce drowsiness, and/or promote sleep. They are central nervous system (CNS) depressants. The test is a definitive assay using gas chromatography mass spectroscopy (GC/MS) methodology. Therapeutic urine drug monitoring of the barbiturates is important for ensuring compliance to treatment strategies, as well as ensuring non-diversion for illicit purposes. Urine or oral fluid are the specimens of choice for routine monitoring of patients taking prescription drugs. Use of serum/plasma should be limited to anuretic patients, or where a patient's clinical appearance does not coincide with their prescribed medications. No single monitoring approach provides adequate information about the pattern or dose of patient drug use. Safest prescribing habits should include a combination of tools and laboratory test results to correctly detect drug use patterns. Quantitative values cannot be used to assess the drug dose, because the drug is extensively metabolized and excreted in the urine. Quantitative values cannot be used to assess the drug dose, because the drug is extensively metabolized and excreted in the urine.
Quest Diagnostics population reference ranges
Quest Diagnostics calculates these statistical intervals for this specific assay and demographic group, not as universal optimal targets.
| Population | Range |
|---|---|
| Amobarbital | <100 ng/mL |
| Butalbital | <100 ng/mL |
| Pentobarbital | <100 ng/mL |
| Secobarbital | <100 ng/mL |
| Phenobarbital | <100 ng/mL |
View complete laboratory reference notes
Amobarbital <100 ng/mL Butalbital <100 ng/mL Pentobarbital <100 ng/mL Secobarbital <100 ng/mL Phenobarbital <100 ng/mL
Quest Diagnostics test directory, test code 39387