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 (GC) (1) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (1) Test Area Exposure (1) Test Category Alcohols (1) Antianxiety (1) (-) Gases (1) Sedative/Hypnotics (1) Volatiles (2) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood