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Test Code TOPIRM Topiramate, Serum

Additional Codes



Reporting Name

Topiramate, S

Useful For

Monitoring serum concentrations of topiramate


Assessing compliance


Assessing potential toxicity

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum Red

Specimen Required

Collection Container/Tube: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Serum must be separated from cells within 2 hours of drawing.

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Red Refrigerated (preferred) 28 days
  Ambient  28 days
  Frozen  28 days

Reference Values

Depends on clinical use:

Anticonvulsant: 5.0-20.0 mcg/mL

Psychiatric: 2.0-8.0 mcg/mL

Day(s) Performed

Monday through Saturday

Test Classification

This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
TOPI Topiramate, S 17713-9


Result ID Test Result Name Result LOINC Value
81546 Topiramate, S 17713-9

Report Available

1 to 2 days

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

Secondary ID



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)