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 Acids (2) Analgesics (5) (-) Antiarrhythmics (2) Antidepressants (6) Antiepileptics/Antiseizures (2) Antihypertensives (2) Antimicrobials (2) Antipsychotics (1) Depressants (3) Metals/Elements (2) Other (1) Sedative/Hypnotics (2) Test Sub-Category Other (2) Test Test Name 2088SP Flecainide, Serum/Plasma 2088U Flecainide, Urine