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) (3) Gas Chromatography (GC) (2) Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) Sample Type (-) Blood (9) Fluid (2) Hair (1) Serum or Plasma (7) Tissue (1) Urine (7) Test Area Drugs of Abuse (1) Therapeutics (8) Test Category (-) Analgesics (9) Depressants (1) NPS/Designer Drugs (1) Test Sub-Category (-) Opiates/Opioids (9) Your search has returned no tests.