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 Urine (1) Test Area Exposure (1) Test Category Antiepileptics/Antiseizures (2) Antipsychotics (4) (-) Industrial/Environmental Toxins (1) Muscle Relaxants (4) Other (2) Pesticides/Insecticides (4) Test Sub-Category (-) Other (1) Proton-Pump Inhibitors (2) Test Test Name 1355U o-Toluidine, Urine