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) (10) Sample Type Blood (10) (-) Fluid (5) Hair (1) (-) Oral Fluid (Saliva) (1) Serum or Plasma (9) Tissue (4) (-) Urine (6) Test Area Therapeutics (12) Test Category (-) Analgesics (12) Antianxiety (1) Antipsychotics (1) Antispasmodics (1) Industrial/Environmental Toxins (1) Muscle Relaxants (1) Other (2) Test Sub-Category Opiates/Opioids (12) Your search has returned no tests.