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 (6) Alcohols (6) Biomarkers (2) Depressants (2) Drugs of Abuse (4) Drugs of Abuse, Therapeutics (5) (-) Gases (1) Industrial/Environmental Toxins (2) NPS/Designer Drugs (1) Other (2) Pesticides/Insecticides (3) Sedative/Hypnotics (6) Solvents (29) Terpenes (2) Therapeutics (13) Volatiles (46) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood