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) Enzyme Immunoassay (EIA) (7) Gas Chromatography (GC) (15) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (20) (-) High Performance Liquid Chromatography/Tandem Quadrupole Time of Flight Mass Spectrometry. (1) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (2) Sample Type Blood (7) Fluid (3) Serum or Plasma (4) Tissue (1) (-) Urine (4) Test Area Drugs of Abuse (2) Therapeutics (2) Test Category Analgesics (1) Anesthetics (1) Depressants (1) Sedative/Hypnotics (1) Test Sub-Category Opiates/Opioids (1) Other (3) Your search has returned no tests.