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) (3) Enzyme-Linked Immunosorbent Assay (ELISA) (8) Enzyme Immunoassay (EIA) (3) Gas Chromatography/Mass Spectrometry (GC/MS) (3) Headspace Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (6) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (5) Sample Type Blood (12) (-) Fluid (5) (-) Serum or Plasma (4) Tissue (4) Umbilical Cord (1) (-) Urine (5) Test Area Drugs of Abuse (4) Postmortem (5) Therapeutics (5) Test Category Analgesics (5) Drugs of Abuse (3) NPS/Designer Drugs (1) Therapeutics (5) Test Sub-Category Opiates/Opioids (6) Other (8) Your search has returned no tests.