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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



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



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

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