| Test Name: | Valproic Acid |
| Epic Order Code: | LAB24 | | |
| CPT Code: | 80164 | | |
| Specimen(s) Type: | Serum | | |
| Acceptable Container(s): |  Tube top is red. |
| Testing Schedule: | 24 hrs/day, 7 days/week |
| Turn Around Time: | STAT: 1 hour |
| | Routine: 2 hours |
| Collection Information: | No special patient preparation is required. Obtain specimen by standard collection procedures. |
| Transport Information: | Deliver to lab immediately. All specimens must be signed into the laboratory. |
| Reference Clients: | If unable to deliver to the lab within 1 hour, centrifuge the specimen and remove serum from the red cells. Store and transport at 2-8° C. Specimen must be received in the lab within 24 hours. |
| Causes for Rejection: | Improperly labeled, incorrect container, contaminated, insufficient quantity, incorrect/delay in transport. |
| Reference Range: | Therapeutic: | 50 - 100 µg/mL |
| | Critical: | > 200 µg/mL |
| Additional Information: | |