Spin and separate
Dk green heparin (Li or Na), no gel
Ambient (preferred) - 3 days
For storage beyond three days, specimen should be refrigerated or frozen
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Therapeutic ranges have not been established.
Peak concentrations are expected at 45 minutes post dose; steady state is generally attained within 2 days.
Observed tiagabine concentrations in clinical trials (30-56 mg/day): <1 - 234 ng/mL. Measured tiagabine concentrations, post marketing (95% confidence interval): 0 - 440 ng/mL