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 (-) Hydrocarbons (1) Opiates/Opioids (2) Other (6) Test Test Name 2745B Methane, Blood