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) (-) Enzyme Immunoassay (EIA) (2) Gas Chromatography (GC) (5) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (17) Sample Type Urine (2) Test Area Therapeutics (2) Test Category Alcohols (3) (-) Analgesics (2) Antianxiety (3) Gases (1) Sedative/Hypnotics (3) Solvents (2) Stimulants (1) Volatiles (4) Test Sub-Category Opiates/Opioids (2) Test Test Name 9324U Methadone Screen, Urine 9444U Meperidine Screen, Urine