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 (1) (-) Serum or Plasma (1) Test Area (-) Therapeutics (1) Test Category (-) Analgesics (1) Depressants (1) Test Sub-Category Opiates/Opioids (1) Your search has returned no tests.