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) (2) Sample Type Blood (2) Meconium (1) (-) Serum or Plasma (2) (-) Urine (1) Test Area (-) Therapeutics (3) Test Category Analgesics (3) Test Sub-Category (-) Opiates/Opioids (3) Your search has returned no tests.