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Phenobarbital
| Item | Value | ||||
|---|---|---|---|---|---|
| Test Update Information | Phenobarbital assay changed from the Abbott Axsym method to the Beckman DxC method on 09/20/2012. | ||||
| Approval req'd? | No | ||||
| Available Stat? | Yes | ||||
| Test code | PBAR | ||||
| Performed by | Parnassus Chemistry | ||||
| In House Availability | Test available 24 hours per day 7 days per week | ||||
| Method | Turbidimetric inhibition immunoassay (Beckman DxC800) | ||||
| Collection Instructions | Time to steady state: 2-4 weeks Collect sample before next dose. Indicate time of draw on requisition. |
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| Container type | Gold top or Light Green top | ||||
| Amount to Collect | 1 mL blood | ||||
| Sample type | Serum or plasma | ||||
| Preferred volume | 0.5 mL serum or plasma | ||||
| Min. Volume | 0.2 mL serum or plasma | ||||
| Units | mg/L | ||||
| Normal range | Therapeutic levels:
Source: Phenobarbital: Drug information copyright 1978-2012, Lexicomp, Inc. Accessed at UpToDate www.uptodate.com August 2012. Therapeutic ranges adopted or modified from the literature based on recommendations of UCSF Pharmacists |
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| Critical value | > 50 mg/L | ||||
| Synonyms | Luminal | ||||
| Stability | Room temperature 8 hours, refrigerated 2 days, frozen at -20C 1 week | ||||
| Turn around times | STAT 1 hour, Routine 4 hours | ||||
| Additional information | See also Barbiturates and Drug Screening. Click here for A guide on Drug Level Monitoring |
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| LOINC code | 3948-7 | ||||
| Last Updated | 1/23/2013 3:28 PM | ||||
| Entry Number | 735 |
If you have additional questions regarding this test, please call: 415-353-1667