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) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (11) Sample Type Urine (1) Test Area Therapeutics (1) Test Category (-) Analgesics (1) Test Sub-Category (-) Opiates/Opioids (1) Sedative-Hypnotics (2) Test Test Name 4303U Talwin® Nx, Urine