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) (5) Enzyme Immunoassay (EIA) (1) Gas Chromatography (GC) (3) Gas Chromatography/Mass Spectrometry (GC/MS) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (11) Sample Type Blood (8) Fluid (3) Serum or Plasma (7) Tissue (1) Urine (4) Test Area Therapeutics (23) Test Category (-) Analgesics (23) NPS/Designer Drugs (3) Test Sub-Category NSAIDs (13) (-) Opiates/Opioids (23) Other (5) Your search has returned no tests.