Test Code RMCVALPACD Valproic Acid, Plasma or Serum*
Methodology
Turbidimetric Inhibition
Performing Laboratory
Rutland Regional Medical Center Laboratory
Specimen Requirements
Specimen Type: Blood
Container/Tube: Serum
Preferred: Green top (lithium heparin gel)
Acceptable: Gold top, serum gel
Specimen Volume: Full tube
Specimen Minimum Volume: 2 mL
Collection Instructions:
1. Draw blood 30 minutes before dose.
2. Send specimen in original tube.
3. If there is a delay in transport of >1 hour, centrifuge tube.
4. 8 hours refrigerated or freeze specimen if longer than 8 hours
Specimen Transport Temperature
Refrigerated 8 hours
Freeze if longer transport time.
Reference Values
Therapeutic concentration: 50-100 µg/mL
Critical Value: >150 µg/mL (automatic call-back)
Day(s) Performed
Daily
Analytical Time:
1 day
Available Stat
Test Coding
CPT: 80164
LOINC: 4086-5
Order Code: RMCVALPACD
Result Code: RMCL800537
Result Name: Valproic Acid Level