Monitoring sodium valproate concentrations are only useful to assess compliance.

Toxic effects do not show a clear relationship to serum concentrations.


Reference range:

Sample should be taken at trough level.

Valproate "target range" 50-100 mg/L, but poorly defined. Value does not meaningfully relate level to clinical effect.

Please contact the Duty Biochemist for discussion of individual patient results


Other Comments:

For more information, please see the following: 

About This Test

Department: Biochemistry


  • Gel/clotted (yellow/red top)

Add-on requests are accepted

Turnaround Time:

Within 24 hours