Phenobarbital
Ordering Recommendation
Optimize drug therapy and monitor patient adherence.
New York DOH Approval Status
Specimen Required
Plain red. Also acceptable: Green (sodium heparin).
Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP standard transport tube. (Min: 0.5 mL)
Refrigerated.
Separator tubes or gels, lavender (EDTA), or gray (sodium fluoride/potassium oxalate). Hemolyzed specimens.
After separation from cells: Ambient: 2 days; Refrigerated: 6 months; Frozen: 6 months
Methodology
Enzyme Multiplied Immunoassay Technique (EMIT)
Performed
Sun-Sat
Reported
Within 24 hours
Reference Interval
| Test Number |
Components |
Reference Interval |
||||||
|---|---|---|---|---|---|---|---|---|
| Phenobarbital |
|
Interpretive Data
| Age |
Interpretive Data (ug/mL) |
|---|---|
| 0-2 months | Toxic: 40.1 or greater |
| 3 months and older | Toxic: 50.1 or greater |
FDA
Note
Hotline History
CPT Codes
80184
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0090230 | Phenobarbital | 3948-7 |
Aliases
- Luminal
















