Biomarker Lens

Common biomarkers

  • Hemoglobin
  • Glucose
  • ALT
  • Apolipoprotein B
  • C-Reactive Protein, Cardiac
  • Ferritin
  • Alb/Creat Ratio, Urine
  • Alkaline Phosphatase
  • FSH
  • T4,Free(Direct)

Biomarkers · Chemical

Valproic Acid

Also listed as
alkaline phosphatase, alk phos, Valproic Acid (Depakote)(R),S
Primary unit
ug/mL
LOINC codes
4086-5
Tests that measure Valproic Acid
Labcorp 2, Quest Diagnostics 2

Tests

Check the catalog code, specimen, method and preparation for every test that measures Valproic Acid. Select up to five tests to compare them side by side.

Labcorp 2 tests

Single-analyte tests

  • Valproic Acid, Serum or Plasma 007260

    Serum · Fasting not stated · Turnaround 1 - 3 days

    Method and collection
    Method
    Immunoassay (IA)
    Collection
    Transfer separated serum or plasma to a plastic transport tube. Oral: peak: one to four hours after dose (influenced by meals); trough: immediately prior to next dose (possibly more useful than peak values).
    Reference notes
    Therapeutic: 50−100 μg/mL
    Labcorp catalog page

Panels that include this biomarker

  • Valproic Acid (Total+Free) 706499

    2 analytes · Serum · Fasting not stated · Turnaround 3 - 5 days

    Method and collection
    Method
    Immunoassay
    Collection
    Oral: peak: 1 to 4 hours after dose (influenced by meals); trough: immediately prior to next dose (possibly more useful than peak values).
    Labcorp catalog page

Quest Diagnostics 2 tests

Single-analyte tests

  • Valproic Acid 916

    Serum · Fasting not stated · Turnaround Set up: Tues-Sat (All shifts); Report available: 4 days

    Method and collection
    Method
    Immunoassay (IA)
    Preparation
    Collect as a trough just prior to next dose
    Collection
    Do not use gel barrier tubes. Centrifuge and immediately separate serum or plasma specimens from the cells into clean transport tube.
    Reference notes
    50.0-100.0 mg/L
    Quest Diagnostics catalog page

Panels that include this biomarker

  • Valproic Acid, Total and Free 6651

    2 analytes · Serum · Fasting not stated

    Method and collection
    Method
    Immunoassay (IA)
    Preparation
    Avoid contact of samples with plasticizers, varnishes, paint fumes, and fatty acids. Collect as trough just before next dose (optimum time to collect sample: 1 hour before next dose).
    Collection
    Do not use gel barrier tubes. Centrifuge and immediately separate serum or plasma specimens from the cells into clean transport tube.
    Reference notes
    See Laboratory Report
    Quest Diagnostics catalog page

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Sources

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

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