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) (2) Enzyme Immunoassay (EIA) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) Sample Type Blood (2) Serum or Plasma (2) Urine (2) Test Area Drugs of Abuse (6) Test Category Analgesics (15) (-) Depressants (6) Test Sub-Category (-) Opiates/Opioids (6) Other (2) Your search has returned no tests.