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-Linked Immunosorbent Assay (ELISA) (4) Enzyme Immunoassay (EIA) (3) Gas Chromatography (GC) (7) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (3) Gas Chromatography/Mass Spectrometry (GC/MS) (3) Headspace Gas Chromatography (GC) (7) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (28) Sample Type Blood (2) Serum or Plasma (2) Test Area Drugs of Abuse (2) Therapeutics (2) Test Category (-) Analgesics (2) (-) Stimulants (2) Test Sub-Category Opiates/Opioids (2) Other (2) Your search has returned no tests.