Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (1) (-) Serum or Plasma (1) (-) Urine (1) Test Area Therapeutics (2) Test Category (-) Antiarrhythmics (2) Antipsychotics (2) Antithyroids (1) Dopamine Precursor (1) Test Sub-Category Other (2) Test Test Name 2088SP Flecainide, Serum/Plasma 2088U Flecainide, Urine