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 (1) Alcohols (3) Biomarkers (1) Emetics (1) (-) Gases (1) Herbicides (1) Metals/Elements (14) Pesticides/Insecticides (3) Solvents (6) Volatiles (14) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood