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) (4) Gas Chromatography (GC) (5) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (6) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (20) Sample Type Blood (2) Fluid (1) Serum or Plasma (1) Urine (2) Test Area Drugs of Abuse (6) Test Category (-) Analgesics (2) (-) Depressants (4) Muscle Relaxants (3) Sedative/Hypnotics (3) Volatiles (1) Test Sub-Category Opiates/Opioids (2) Other (4) Your search has returned no tests.