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 Gases (1) Test Sub-Category Carboxylic Acids (1) (-) Hydrocarbons (1) Other (8) Test Test Name 2745B Methane, Blood