Days Set Up
Monday, Wednesday, Friday
Analytic Time

8 hours

MiChart Code
Topiramate, Serum
Soft Order Code
TOPRM

Test Updated:

Synonyms

TOPIR
Topiramate, Serum
Topamax

Looking to order a test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

Test Usage

Measurement of topiramate serum concentration is useful for monitoring dosage compliance and to guide dose adjustment during co-therapy with phenytoin or carbamazepine.

Reference Range

5.0 - 20.0 mcg/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect specimen in a red top tube; do not use SST tube.

Collection Offsite

Collect specimen in a red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Red Top Tube
Normal Volume
1 mL serum
Minimum Volume
0.3 mL serum

Billing Information

CPT Code
80201
Pro Fee Code
 
LOINC
17713-9

Have More Questions?

Explore our helpful billing resources:

Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.