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) (2) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (9) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (2) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (1) Sample Type Blood (25) Fat (1) (-) Fluid (1) Serum or Plasma (22) Tissue (4) Urine (18) Test Area Therapeutics (1) Test Category Analgesics (1) Test Sub-Category Opiates/Opioids (1) Test Test Name 3990FL Propoxyphene and Metabolite, Fluid