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) (9) Enzyme-Linked Immunosorbent Assay (ELISA) (2) Enzyme Immunoassay (EIA) (3) Gas Chromatography (GC) (24) (-) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (2) Gas Chromatography/Mass Spectrometry (GC/MS) (10) Headspace Gas Chromatography (GC) (7) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (48) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (4) (-) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (2) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (20) Refractometer (REF) (2) Sample Type Blood (2) (-) Serum or Plasma (2) (-) Urine (2) Test Area Drugs of Abuse (2) Therapeutics (2) Test Category Analgesics (2) Hallucinogens (2) Test Sub-Category Opiates/Opioids (2) Other (2) Test Test Name 8721SP Meperidine and Metabolite, Serum/Plasma 8721U Meperidine and Metabolite, Urine 9293SP Methylenedioxymethamphetamine and Metabolite Screen, Serum/Plasma 9293U Methylenedioxymethamphetamine and Metabolite Screen, Urine