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) (1) Sample Type Blood (3) (-) Fluid (1) Serum or Plasma (6) Tissue (1) Urine (1) Test Area Therapeutics (1) Test Category (-) Antiepileptics/Antiseizures (1) Hallucinogens (2) Therapeutics (3) Test Sub-Category Barbiturates (1) (-) Other (1) Test Test Name 3743FL Phenytoin, Fluid