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HelpTest Code VALP Valproic Acid
Additional Codes
| Epic Ordering Code | LAB24 |
| NBS code | LBC01005 |
| Service code | 31835 |
Specimen Requirements
Submit only one of the following:
| Preferred: | Acceptable: |
| Yellow Top | Light Green Top |
Processing Requirements
Allow specimen to clot for 30 mins (Yellow Top) and centrifuge within 2 hours
Specimen type: Serum/Plasma
Volume: 0.5mL
Specimen Stability
| Specimen Type | Serum/Plasma |
|---|---|
| Ambient | Not available |
| Refrigerate | 48 hours |
| Frozen | 7 days |
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Methodology
Particle-Enhanced Turbidimetric Inhibition Immunoassay (PETINIA)
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
| Therapeutic range | 50 – 100 mg/L |
|---|---|
| Critical value | > 120 mg/L |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Therapeutic drug monitoring.
Update
Last updated 28/07/2026
LOINC Code Information
4086-5
Alias
Valproate