Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme Immunoassay (EIA) (2) (-) Gas Chromatography (GC) (1) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (4) Sample Type Blood (2) Serum or Plasma (2) (-) Urine (1) Test Area Therapeutics (1) Test Category Analgesics (1) Test Sub-Category Barbiturates (1) (-) Opiates/Opioids (1) Other (4) Tetracyclics (2) Your search has returned no tests.