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 Alcohols (2) Analgesics (2) Anesthetics (1) Antianxiety (1) Antiarrhythmics (2) Antidepressants (2) Antiepileptics/Antiseizures (1) Antineoplastics (1) (-) Gases (1) Hallucinogens (2) Pesticides/Insecticides (1) Sedative/Hypnotics (1) Volatiles (4) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood