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 (6) (-) Fluid (1) Serum or Plasma (8) Tissue (1) Urine (3) Test Area Therapeutics (1) Test Category (-) Antiepileptics/Antiseizures (1) Antipsychotics (1) Hallucinogens (1) Stimulants (1) Test Sub-Category Barbiturates (1) NSAIDs (1) Opiates/Opioids (3) (-) Other (1) Test Test Name 3743FL Phenytoin, Fluid