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) (1) Gas Chromatography (GC) (2) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (5) Sample Type (-) Blood (9) Fluid (2) Serum or Plasma (9) Tissue (1) Urine (8) Test Area Therapeutics (9) Test Category (-) Analgesics (9) Test Sub-Category Antihistamines (1) (-) Opiates/Opioids (9) Your search has returned no tests.