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) (24) Gas Chromatography/Mass Spectrometry (GC/MS) (4) Headspace Gas Chromatography (GC) (18) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (5) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (15) Spectrophotometry (SP) (1) Sample Type (-) Blood (4) Fluid (2) (-) Hair (1) Serum or Plasma (3) Tissue (2) Umbilical Cord (3) Urine (2) Test Area Drugs of Abuse (1) Postmortem (1) Therapeutics (3) Test Category Analgesics (3) Exposure (1) NPS/Designer Drugs (1) Test Sub-Category Opiates/Opioids (4) Other (1) Your search has returned no tests.