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Test Code Valp Valproic Acid

Aliases

Depakote, VPA

Useful For

Anticonvulsant

Patient Preparation

No special patient preparation required

Special Collection Instructions

Draw trough levels immediately prior to next dose.

Collection Method

Venous collection

Minimum Volume

  • Adults: 1 mL
  • Pediatric: 0.6 mL

Container

Lt Green / Plasma Separator / Lithium Heparin

Preferred Specimen

Light Green Top (lithium heparin) plasma

Acceptable Specimens

Serum:

  • Gold Top SST

  • Red Top

Plasma:
  • Light Geen Top (lithium heparin)
  • Purple or Pink Top(K2/K3 EDTA)

Reference or Target Ranges

50 – 100 μg/mL

Reportable Units

μg/mL

Critical Value

>150 μg/mL

Reasons for Rejection



<!-- Rejection-->
Hemolysis Threshold
 500 mg/dL
Icterus Threshold
 30 mg/dL
Lipemia Threshold
 500 mg/dL
Other
 QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability



<!-- Stability -->
Ambient
 2 days
Refrigerated (4°C to 8°C)
 7 days
Frozen(-40°C to 0°C)
 3 months

Performance Information



<!-- Performance information -->
Days and Time Performed
 24/7
Expected Turn Around Time
 Stat: 1 hour
Routine: 4 hours
Stat Availability
 Yes
Performing Bench
 UH Chemistry
Methodology/Method Description
 Roche Cobas – Two site immunoenzymatic sandwich assay

CPT Codes

80164