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) (9) Enzyme Immunoassay (EIA) (11) Gas Chromatography/Mass Spectrometry (GC/MS) (5) Headspace Gas Chromatography (GC) (9) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) (-) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (4) Sample Type Blood (6) Serum or Plasma (3) (-) Urine (4) Test Area Drugs of Abuse (4) Test Category Drugs of Abuse (1) Drugs of Abuse, Therapeutics (1) NPS/Designer Drugs (2) Test Sub-Category Opiates/Opioids (1) Other (3) Your search has returned no tests.