Homogeneous Enzyme Immunoassay
Monitor therapeutic drug level, compliance, evaluate valproic acid toxicity
2-10 mcg/mL (approximately 10% of the total drug concentration); Toxic >15 mcg/mL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Use of heparinized blood tubes is not allowed (may lead to artificially high free valproic acid level).
Days Test Performed
Daily, 24 hrs
Soft Order Code
Valproic Acid Level, Free
Depakene, Protein Free
Free Valproic Acid
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Offsite Collection Instructions
Collect blood in a red top tube. Centrifuge, aliquot serum into a plastic vial, and refrigerate.
1 mL serum or plasma
0.75 mL serum or plasma