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Valproic acid
| Item | Value | ||
|---|---|---|---|
| Test Update Information | Valproic 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 | VALP | ||
| 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: 2-3 days. Collect trough samples 30 minutes before next dose. |
||
| 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 |
VPA therapeutic range of 50 - 125 mg/L was set based on recommendations in the literature and consultations with UCSF pharmacists and neurologists. Source: Valproate: Drug information copyright 1978-2012, Lexicomp, Inc. Accessed at UpToDate www.uptodate.com August 2012. |
||
| Critical value | > 150 mg/L | ||
| Synonyms | Depakene; Valproate; Depakote | ||
| Stability | Room temperature 8 hours, refrigerated 2 days, frozen at -20C 1 week | ||
| Turn around times | Stat 1 hour, Routine 4 hours | ||
| Additional information | Click here for A guide on Drug Level Monitoring | ||
| LOINC code | 4086-5 | ||
| Last Updated | 1/23/2013 3:52:50 PM | ||
| Entry Number | 973 |
If you have additional questions regarding this test, please call: 415-353-1667