Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (10) Enzyme Immunoassay (EIA) (5) Gas Chromatography (GC) (5) Gas Chromatography/Mass Spectrometry (GC/MS) (6) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (26) Sample Type Blood (5) Serum or Plasma (5) Test Area Drugs of Abuse (4) Therapeutics (6) Test Category (-) Analgesics (6) (-) Depressants (2) Psychoactives (3) (-) Stimulants (2) Test Sub-Category Opiates/Opioids (8) Other (2) Your search has returned no tests.