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) (9) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (2) Enzyme Immunoassay (EIA) (3) Gas Chromatography (GC) (23) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (2) Gas Chromatography/Mass Spectrometry (GC/MS) (13) Headspace Gas Chromatography (GC) (9) Hematofluorometry (H) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (46) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (3) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (2) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (22) Refractometer (REF) (2) Spectrophotometry (SP) (1) Sample Type (-) Blood (2) Serum or Plasma (2) Test Area Drugs of Abuse (1) Therapeutics (1) Test Category Analgesics (1) Stimulants (1) Test Sub-Category Opiates/Opioids (1) Other (1) Your search has returned no tests.