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) (9) Sample Type Blood (3) Fluid (1) Serum or Plasma (3) Tissue (1) (-) Urine (2) Test Area Therapeutics (2) Test Category Acids (1) Alcohols (1) (-) Analgesics (1) (-) Antidepressants (1) Antiepileptics/Antiseizures (1) Antihypertensives (1) Antipsychotics (2) Cholinesterase Inhibitors (1) Solvents (2) Volatiles (1) Test Sub-Category Opiates/Opioids (1) Tricyclic (1) Test Test Name 4303U Talwin® Nx, Urine 4706U Trimipramine and Metabolite, Urine