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) (7) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (37) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (3) Serum or Plasma (2) Urine (3) Test Area Exposure (5) (-) Therapeutics (8) Test Category Analgesics (1) Antispasmodics (3) Muscle Relaxants (4) Test Sub-Category Antispasmodics (3) Opiates/Opioids (1) Other (4) Your search has returned no tests.