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) (8) Enzyme-Linked Immunosorbent Assay (ELISA) (35) Enzyme Immunoassay (EIA) (7) Gas Chromatography (GC) (35) (-) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (17) Gas Chromatography/Tandem Mass Spectrometry (GC-MS/MS) (1) Headspace Gas Chromatography (GC) (32) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (48) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (11) Spectrophotometry (SP) (1) Sample Type Blood (1) Test Area Therapeutics (1) Test Category Analgesics (1) Test Sub-Category (-) Opiates/Opioids (1) Tricyclic (2) Your search has returned no tests.