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) (7) Enzyme Immunoassay (EIA) (3) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (2) Headspace Gas Chromatography (GC) (10) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (1) Sample Type Blood (1) Urine (1) Test Area Drugs of Abuse (1) Exposure (1) Test Category Acids (3) Alcohols (3) Chemicals (1) Drugs of Abuse (3) (-) Drugs of Abuse, Therapeutics (1) (-) Gases (1) Industrial/Environmental Toxins (1) Other (1) Solvents (4) Therapeutics (8) Volatiles (11) Test Sub-Category Hydrocarbons (1) Other (1) Test Test Name 2745B Methane, Blood 8031U Child Drug Exposure Screen, Urine