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 (2) Alcohols (6) Biomarkers (1) Emetics (2) (-) Gases (1) Herbicides (2) Metals/Elements (30) Pesticides/Insecticides (6) Solvents (11) Volatiles (17) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood