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) (27) Enzyme Immunoassay (EIA) (9) Gas Chromatography/Mass Spectrometry (GC/MS) (6) Headspace Gas Chromatography (GC) (15) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (5) (-) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (10) Sample Type Blood (3) Serum or Plasma (3) Urine (4) Test Area (-) Drugs of Abuse (10) Impairment (2) Postmortem (1) Test Category Drugs of Abuse (3) Drugs of Abuse, Therapeutics (1) NPS/Designer Drugs (6) Test Sub-Category Opiates/Opioids (3) Other (7) Your search has returned no tests.