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 (5) Biomarkers (2) Depressants (1) (-) Gases (1) Metals/Elements (1) Other (5) Perfluorinated Compounds (1) Pesticides/Insecticides (2) Solvents (17) Terpenes (2) Volatiles (35) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood