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) (3) (-) Enzyme Immunoassay (EIA) (1) (-) Gas Chromatography (GC) (5) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (20) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (3) Fat (1) Serum or Plasma (2) Tissue (1) (-) Urine (3) Test Area Exposure (2) Therapeutics (4) Test Category Analgesics (1) Muscle Relaxants (3) Other (1) Pesticides/Insecticides (1) Test Sub-Category Opiates/Opioids (1) Other (5) Your search has returned no tests.