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Test Code VALP Valproic Acid, Plasma

Methodology

Competitive Homogenous Enzyme Immunoassay

Performing Laboratory

St. Clair Hospital Laboratory

Specimen Requirements

Draw blood in a green-top (lithium heparin) tube(s). Spin down, and send 1 mL of lithium heparin  plasma. Draw specimen 6 hours after last dose. Centrifuge blood as soon as possible, or send unspun blood to laboratory within 4 hours of draw.

Reference Values

Therapeutic concentration:  50.0-100.0 µg/mL
Critical value (automatic call-back):  >200.0 µg/mL

Day(s) Test Set Up

Monday through Sunday