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Valproic Acid (Valproate)

Clinical Biochemistry

Sample and container requirements

Serum

Minimum volume required

Special requirements

None

Patient preparation

Samples should be taken at trough drug levels by collecting a sample prior to the next dose.

Sample viability

Turnaround time

5 days

Reference range

There is no recommended therapeutic range for valproate

Clinical guidance

Valproate (valproic acid) is primarily used in the treatment of petit mal seizures, as well as other generalised and partial complex seizures. Due to the potential of severe adverse reactions, it is important that serum levels of valproate be monitored during therapy. Please refer to LabTestsOnlineUK to learn more about valproic acid. https://labtestsonline.org.uk/tests/valproic-acid

Notes

Images to go here

This information was last updated on 19 August 2026