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) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (4) (-) Enzyme Immunoassay (EIA) (2) Gas Chromatography (GC) (5) Headspace Gas Chromatography (GC) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (20) Sample Type (-) Blood (3) Serum or Plasma (3) (-) Urine (2) Test Area Drugs of Abuse (4) Therapeutics (1) Test Category Analgesics (1) Depressants (2) Hallucinogens (2) Test Sub-Category Opiates/Opioids (3) Other (2) Your search has returned no tests.