Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (2) Serum or Plasma (2) (-) Urine (2) Test Area Therapeutics (2) Test Category Acids (1) Analgesics (1) Antidepressants (1) (-) Antiepileptics/Antiseizures (1) (-) Antiparkinsons (1) Antipsychotics (3) Solvents (1) Terpenes (1) Volatiles (1) Test Sub-Category Anticholinergics (1) Other (1) Test Test Name 4680U Trihexyphenidyl, Urine 4700U Trimethadione and Metabolite, Urine