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HelpTest Code LAB60046 Barbiturate Screen, Urine
Useful For
Qualitative screening for drugs of abuse. Barbiturates are sedative hypnotics with central nervous system depressant activity.
Methodology
Kinetic Interaction of Microparticles in Solution (KIMS)
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Urine
Container/Tube: Clean container
Specimen Volume: 25 mL
Specimen Minimum Volume: 2 mL
Collection Instructions:
1. Collect a freshly-voided, random urine collection.
2. No preservative.
3. Refrigerate specimen after collection and send specimen refrigerated. Centrifuge before analysis.
Specimen Transport Temperature
Refrigerated
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine Drug Assay | Refrigerated | 5 days |
| Frozen | 14 days | |
| Urine Specific Gravity & pH | Refrigerated | 4 hours |
Reference Values
Negative (reported as positive or negative)
Cutoff concentration: 200 ng/mL (0.2 µg/mL)
The results from this test can be reported qualitatively as negative or positive relative to the 200 ng/mL cutoff level for barbiturates. Positive results indicate that the specimen is likely to contain barbiturates. Negative results indicate that either the specimen does not contain barbiturates or that barbiturates are present in concentrations below the cutoff level of 200 ng/mL.
Results of this test should always be interpreted in conjunction with the patient’s medical history, clinical presentation, and other findings.
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
80307