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Valproic Acid (Total+Free)
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Test Code: 706499
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Performing Lab: LABCORP BURLINGTON |
CPT Code:
80164 80165
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| Specimen Container | Red-stopper tube. Transfer separated serum to a plastic transport tube. Do not use a serum separator tube; the use of serum separator tubes is not recommended due to slow absorption of the drug by the gel. Depending on the specimen volume and storage time, the decrease in drug level due to absorption may be clinically significant. |
| Specimen Type | Serum |
| Volume | 2.7 mL |
| Minimum Volume | 1.4 mL |
| Temperature | Room Temperature |
| Specimen Handling | Oral: peak: 1-4 hours after dose (influenced by meals); trough: immediately prior to next dose (possibly more useful than peak values) |
| Methodology | Immunoassay |
| Stability | Room Temperature: 14 days, Refrigerated: 14 days, Frozen: 14 days |
| Unacceptable Conditions | Gel tube; hemolysis; lipemia |
| Days Set-Up | M-F and Sun 2nd shift |
| Shift Performed | 1,2,3 |
| TAT From Set-Up | 3 - 4 Days |
| Result Code | Result Name | LOINC |
| 007260 | Valproic Acid (Depakote)(R),S | 4086-5 |
| 070790 | Free Valproic Acid (Depakote) | 4087-3 |
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