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) (1) Gas Chromatography (GC) (3) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (3) Sample Type Blood (1) Test Area Exposure (1) Test Category Acids (3) Alcohols (3) 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) Test Test Name 2745B Methane, Blood