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) (2) Enzymatic Assay (EZA) (1) Enzyme-Linked Immunosorbent Assay (ELISA) (13) (-) Enzyme Immunoassay (EIA) (3) Gas Chromatography (GC) (27) Gas Chromatography/Mass Spectrometry (GC/MS) (5) Headspace Gas Chromatography (GC) (34) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (5) Refractometer (REF) (2) Spectrophotometry (SP) (1) Sample Type Urine (3) Test Area Drugs of Abuse (3) Test Category Drugs of Abuse (4) (-) Drugs of Abuse, Therapeutics (3) Therapeutics (2) Test Sub-Category Other (3) Your search has returned no tests.