Valproic Acid, Total and Free QVALTF

Method(s) Immunoassay (IA)
Synonym Depakene
Specimen Required
Collect

One 5 mL plain red top tube (no gel). Also acceptable: Plasma collected in lavender (EDTA) top tube.

Transport

Transfer 3 mL serum refrigerated (Min: 1.5 mL)

* Collection Instructions *

  • Do not use gel barrier tubes.
  • Centrifuge and immediately separate serum or plasma specimens from the cells into clean transport tube.
Remarks

Patient Preparation

  • Avoid contact of samples with plasticizers, varnishes, paint fumes, and fatty acids.
  • Collect as trough just before next dose (optiumum time to collect sample: 1 hour before next dose).
Stability

Ambient: 48 hours

Refrigerated: 7 days

Frozen: 30 days

Unacceptable Conditions

Gold (SST) top tube

Billing Code 9011731
CPTCode 80164, 80165
Notes Performing Laboratory Quest Diagnostics Nichols Institute-Chantilly VA
Preferred Specimen Collection Device(s)
No Appointment Necessary
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11 Patient Service Centers in Central New York.

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