Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme-Linked Immunosorbent Assay (ELISA) (15) Gas Chromatography/Mass Spectrometry (GC/MS) (3) Headspace Gas Chromatography (GC) (7) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) (-) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (6) Sample Type (-) Blood (6) Serum or Plasma (3) Urine (4) Test Area Drugs of Abuse (3) Impairment (2) Postmortem (1) Test Category Drugs of Abuse (3) NPS/Designer Drugs (3) Test Sub-Category Opiates/Opioids (1) Other (5) Your search has returned no tests.