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HelpTest Code LAB24 Valproic Acid Total
Specimen Requirements
Container/Tube:
Preferred: Lithium Heparin (Green Top)
Acceptable: Serum (Red Top)
Specimen Volume: 1mL
Stability:
| Temperature | Time |
| Room Temp 18-28°C | 1 day |
| Refrigerated 2–8°C | 2 weeks |
| Frozen <-18°C | 2 weeks |
Additional Instructions
Collection Time After Administration:Trough: 30 minutes prior to next dose
Peak: 2 hours after oral dose (or at least 4 hours for enteric coated or extended/delayed release tabs)
Designate last dose date and time.
Therapeutic Range
Valproic Acid, total: 50-100 mcg/mLToxic: >150 mcg/mL
Synonyms
Depakene, Depakote, Chemistry
Department
Chemistry