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HelpOrder Code TOPIR Topiramate, Serum
Additional Codes
Mayo Test ID: TOPI
Reporting Name
Topiramate, SUseful For
Monitoring serum concentrations of topiramate
Assessing compliance
Assessing potential toxicity
Specimen Type
Serum RedSpecimen Required
Collection Container/Tube: Red top (serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions:
1. Draw blood immediately before next scheduled dose.
2. Centrifuge and aliquot serum into plastic vial; within 2 hours of collection.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum Red | Refrigerated (preferred) | 28 days |
| Ambient | 28 days | |
| Frozen | 28 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
Anticonvulsant: 5.0-20.0 mcg/mL
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Day(s) Performed
Monday through Friday
CPT Code Information
80201
Method Description
Samples are diluted and extracted online by liquid chromatography, with detection by tandem mass spectrometry.(Unpublished Mayo method)
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-Neurology Specialty Testing Client Test Request (T732)
-Therapeutics Test Request (T831)