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) (1) Enzyme Immunoassay (EIA) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (5) Sample Type Blood (10) Fluid (5) (-) Hair (1) Oral Fluid (Saliva) (1) Serum or Plasma (9) Tissue (4) (-) Urine (6) Test Area Therapeutics (7) Test Category (-) Analgesics (7) Antianxiety (1) Antispasmodics (1) Industrial/Environmental Toxins (1) Muscle Relaxants (1) Other (1) Test Sub-Category Opiates/Opioids (7) Your search has returned no tests.