Item Value
Test name Topiramate
Available Stat? No
Turn around times Performed 5x per week. Turnaround 4-8 days
Performed by Quest
Normal range
Daily dose (mg) Peak Trough
100 6.5-9.2 µg/mL 4.5-6.6 µg/mL
200 12-16 µg/mL 8-12 µg/mL
400 20-30 µg/mL 14-20 µg/mL
Container type Red top preferred, Dark green top acceptable (Gold top NOT acceptable)
Amount to Collect 2 mL blood
Collection Instructions Draw peak 2-4 hours after dose, trough 0.5-1 hour before dose when patient is at steady state. Avoid hemolysis
Sample type Serum (plasma acceptable)

If you have additional questions regarding this test, please call: 415-353-1667