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| 89060:VALPROIC ACID, FREE | |||||||||
| Alias Names: | Depakote / Depakene® / VPA | ||||||||
| Methodology: | Immunoassay / Ultrafiltration | ||||||||
| Edit Date: | 3/16/2010 | ||||||||
| Performed: | Daily | ||||||||
| Released: | 24-48 hours after setup at PeaceHealth Laboratories’ reference lab. | ||||||||
| CPT Code: | 80164-90 | ||||||||
| Specimen Collection Details | |||||||||
| Collection: | One 5 mL red top tube. Do not use serum separator tube (SST). Also acceptable: Heparinized plasma. NOTE: Trough levels are most reproducible. |
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| Handling: | Allow to clot, centrifuge and separate serum or plasma into a plastic vial. Refrigerate. | ||||||||
| Stability: | 72 hours ambient. Refrigerate or freeze for longer storage. | ||||||||
| Standard Volume: | 1 mL serum or plasma | ||||||||
| Minimum Volume: | 1 mL serum or plasma (does not allow for repeat testing or confirmations). | ||||||||
| Transport: | Refrigerated. | ||||||||
| Rejection Criteria: | Use of SST.
This test may require insurance company prior authorization before ordering.
Please check the prior authorization list . Failure to gain preauthorization may result in denial of coverage. |
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| Reference Range: | |||||||||||||||||||
| Report Limit | 2.0 µg/mL | ||||||||||||||||||
| Reference Range | 6.0-20.0 µg/mL | ||||||||||||||||||
| Critical Value – High | 40.0 µg/mL | ||||||||||||||||||