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 (4) Alcohols (12) Biomarkers (5) Chemicals (1) Depressants (2) (-) Gases (1) Industrial/Environmental Toxins (1) Metals/Elements (2) Other (6) Perfluorinated Compounds (2) Pesticides/Insecticides (4) Solvents (28) Terpenes (3) Volatiles (47) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood