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) Insecticides (1) Macrominerals (7) Opiates/Opioids (1) Other (60) Toxic Elements (9) Trace Elements (14) Test Test Name 2745B Methane, Blood