Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Sample Type Blood (1) Test Area Exposure (1) Test Category Acids (3) Alcohols (3) Drugs of Abuse (6) Drugs of Abuse, Therapeutics (3) (-) Gases (1) Industrial/Environmental Toxins (1) NPS/Designer Drugs (1) Other (1) Solvents (4) Therapeutics (13) Volatiles (11) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood