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) (2) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (2) Enzyme Immunoassay (EIA) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (5) Sample Type Blood (1) Serum or Plasma (1) Urine (2) Test Area Drugs of Abuse (2) Exposure (2) Test Category (-) Acids (2) Analgesics (2) (-) Depressants (2) Hallucinogens (3) Test Sub-Category Carboxylic Acids (2) Opiates/Opioids (2) Your search has returned no tests.