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) (2) Gas Chromatography (GC) (6) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (24) Sample Type Blood (1) Test Area Drugs of Abuse (1) Test Category (-) Analgesics (1) Sedative/Hypnotics (3) Test Sub-Category Opiates/Opioids (1) Your search has returned no tests.