Test Contains (LOINC)
Valproic Acid Total (4086-5), Valproic Acid Percent Free (32283-4), Valproic Acid Free (4087-3)
Preferred Container
Plain (Red Top) Tube
Minimal Sample Volume
1.0 mL
Handling Instructions
Separate serum from cells within 2 hours of collection. Transfer 2 mL serum to a Standard Transport Tube.
Client Transport Temperature
Refrigerated
Specimen Stability
After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 1 month
Unsuitable Specimen
Light blue (citrate), gray (oxalate), green (heparin), K[2]EDTA plasma, tubes that contain liquid anticoagulant, or gel separator tubes.
Frequency
Tuesday, Wednesday, Thursday, Friday, Saturday
Expected Turn Around
2 – 5 Days
Responsible Dept
Reference Lab
Methodology
Quantitative Enzyme Multiplied Immunoassay Technique
Notes
Timing of specimen collection: Pre-dose (trough) draw – At steady state concentration.
