Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) (-) Gas Chromatography (GC) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Hematofluorometry (H) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (12) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (12) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (2) Sample Type Urine (1) Test Area Therapeutics (1) Test Category Analgesics (1) Test Sub-Category Antiparasitics (2) Barbiturates (3) Calcium Channel Blockers (5) Non-Barbiturate Sedative Hypnotics (2) (-) Opiates/Opioids (1) Organochlorides (1) Other (28) Phenothiazines (3) Sedative-Hypnotics (2) Tricyclic (5) Test Test Name 4303U Talwin® Nx, Urine