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) (7) Enzyme Immunoassay (EIA) (4) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (6) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (12) (-) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (6) Sample Type Blood (4) Fluid (1) Serum or Plasma (3) Urine (4) Test Area (-) Drugs of Abuse (12) Exposure (1) Therapeutics (6) Test Category Analgesics (2) Depressants (4) Hallucinogens (3) NPS/Designer Drugs (3) Test Sub-Category Opiates/Opioids (5) Other (7) Your search has returned no tests.