Topiramate
0070390
Ordering Recommendation
 
Mnemonic
TOPIR
Methodology
Quantitative Enzyme Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
Timing of specimen collection: Pre-dose (trough) draw - At steady state concentration.  
Collect
Plain red. Also acceptable: Lavender (EDTA), pink (K2EDTA), or green (sodium or lithium heparin).  
Specimen Preparation
Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.3 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Serum or plasma separator tubes.  Grossly hemolyzed specimens.  
Remarks
  
Stability
After separation from cells: Ambient: 6 days; Refrigerated: 1 week; Frozen: 4 weeks  
Reference Interval
Effective November 18, 2013

Therapeutic range:  5.0-20.0 µg/mL
Toxic:                Not well established  
Interpretive Data
Pharmacokinetics varies widely, particularly with co-medications, age, and/or compromised renal function. Adverse effects may include somnolence, fatigue, and dizziness.  
Note
 
CPT Code(s)
80201
Components
Component Test Code*Component Chart NameLOINC
0070390Topiramate17713-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • tompamax concentration
  • tompamax level
  • Topamax
  • topiramate concentration
  • topiramate level