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) (4) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (3) Headspace Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (3) (-) Fluid (3) Serum or Plasma (2) Tissue (3) Urine (1) Test Area Postmortem (3) Test Category Therapeutics (3) Test Sub-Category Opiates/Opioids (1) (-) Other (3) Your search has returned no tests.