Test Overview
Test Methodology

Homogeneous Enzyme Immunoassay

Test Usage

Monitor therapeutic drug level

Reference Range *

Therapeutic range: 50-100 mcg/ml. Toxic > 150 mcg/ml.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Daily, 24 hours
Analytic Time

2 hours

Soft Order Code
VALP
MiChart Code
Valproic Acid Level, Total
Synonyms
  • Depakene
  • Depakote
  • Epilim
  • VALP
  • VALPROIC ACID
  • VALPROIC ACID LEVEL
  • VPA
Laboratory
Chemical Pathology
Section
Automation
STAT Availability

STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).

Specimen Requirements
Collection Instructions

Collect blood in a red top tube. Centrifuge, aliquot serum into a plastic vial, and refrigerate.

Alternate Specimen
SST tube, Green top tube.
Red Top Tube
Normal Volume
0.5 mL serum or plasma
Minimum Volume
0.25 mL serum or plasma
Additional Information

Monitor SGOT, SGPT, CBC, platelets, and other coagulation parameters in patients on this drug. Amylase should be measured in patients with recurrent vomiting and abdominal symptoms to detect valproic acid associated pancreatitis.

Billing
CPT Code
80164
Fee Code
33277
LOINC
4086-5
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