ARUP's Laboratory Test Directory

Topiramate : 0070390

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
Reference Interval:
Therapeutic range not well established.
Interpretive Data: 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. 
CPT Code(s): 80201
 
 

 

 

 
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