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 (2) Serum or Plasma (10) (-) Tissue (1) Urine (1) Test Area Therapeutics (1) Test Category Antidepressants (1) (-) Antiepileptics/Antiseizures (1) Antihistamines (1) Antipsychotics (1) Stimulants (2) Test Sub-Category Other (1) Test Test Name 3743TI Phenytoin, Tissue