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) (8) (-) Enzyme Immunoassay (EIA) (1) (-) Gas Chromatography (GC) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (28) Sample Type Blood (2) Serum or Plasma (1) Urine (2) Test Area Therapeutics (5) Test Category (-) Analgesics (1) Antispasmodics (3) (-) Muscle Relaxants (4) Other (1) Pesticides/Insecticides (4) Test Sub-Category Opiates/Opioids (1) Other (4) Your search has returned no tests.