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Valproic Acid

Loinc

Expected Turnaround

24 hours

Information

Monitoring efficacy and dosage

Collection Information

Specimens for valproic acid analysis should be drawn just prior to dose, preferably in the fasting state. More frequent monitoring may be necessary when administering valproic acid in the presence or during the withdrawal of other anti‑epileptic agents.

Methodology

homogeneous enzyme immunoassay

Limitations

In very rare cases, gammopathy, in particular type IgM (Waldenström’s macroglobulinemia), may cause unreliable results.

Rejection Criteria

Specimen Stability

Room temperature: 2 days Refrigerated: 7 days Frozen: 3 months

Alias

Valproic Acid; DepaconÂ®; Depakene(r); DepakoteÂ®; Stavzorâ„¢; Valproate

Container Type

Serum, Red top, no gel barrier. Send in serum pour off tube.

Minimum Volume

1 ML

Age Range

0 - 999

Sex

Generic

Units of Measure

Reference Range

50 - 100

Panic Range

>150