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) (2) Gas Chromatography (GC) (33) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (3) Gas Chromatography/Mass Spectrometry (GC/MS) (16) Headspace Gas Chromatography (GC) (13) Hematofluorometry (H) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (73) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (6) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (58) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (3) Refractometer (REF) (2) Spectrophotometry (SP) (1) Sample Type Blood (1) Serum or Plasma (1) Test Area Drugs of Abuse (2) (-) Therapeutics (2) Test Category Analgesics (2) Test Sub-Category Opiates/Opioids (2) Test Test Name 9324B Methadone Screen, Blood 9324SP Methadone Screen, Serum/Plasma