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HelpTest Code VALP Valproic Acid, Total, Plasma
Additional Codes
LAB24
Aliases
Depakote, VPA
Special Collection Instructions
Draw trough levels immediately prior to next dose.
Collection Method
Venous collection
Minimum Volume
0.5ml
Container
Lt Green / Plasma Separator / Lithium Heparin
Acceptable Specimens
Serum:
- Gold Top SST
- Red Top
Plasma:
- Light Geen Top (lithium heparin)
Reference or Target Ranges
50 – 100 μg/mL
Reportable Units
μg/ml
Critical Value
trough ≥ 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 | CPH Chemistry |
| Methodology/Method Description | Roche Cobas |
CPT Codes
80164
Last review/edit date
2025