ARUP's Laboratory Test Directory
| 0070390: Topiramate |
| Test Mnemonic: TOPIR | |
|
Methodology: Fluorescence Polarization Immunoassay
Performed: Mon-Fri Reported: 1-4 days |
| Specimen Required: | |
|
Collect: One 5 mL plain red. Also acceptable: green (sodium heparin).
Transport: 1 mL serum or plasma at 2-8°C. (Min: 0.4 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.4 mL serum or plasma at 2-8°C. Remarks: Separate serum or plasma from cells ASAP. Avoid use of separator tubes and gels. Stability: After separation from cells: Ambient: 6 weeks; Refrigerated: 6 weeks; Frozen: 6 weeks |
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| Reference Interval: |
| Therapeutic range not well established. |
| Interpretive Data: | |
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The proposed therapeutic range for seizure control is 5-20 µg/mL. Pharmacokinetics varies widely, particularly with co-medications, age, and/or compromised renal function.
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| CPT Code(s): | |
| 80201 |