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) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (4) Sample Type Blood (7) (-) Fluid (4) Meconium (1) Oral Fluid (Saliva) (1) Serum or Plasma (6) Tissue (3) Urine (5) Test Area Therapeutics (4) Test Category Analgesics (4) Test Sub-Category (-) Opiates/Opioids (4) Other (1) Your search has returned no tests.