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 (6) Alcohols (20) Antiepileptics/Antiseizures (3) Biomarkers (5) Depressants (10) Diagnostic Aids (2) Drugs of Abuse (14) Drugs of Abuse, Therapeutics (15) Exposure (1) (-) Gases (1) Industrial/Environmental Toxins (2) NPS/Designer Drugs (1) Other (4) Pesticides/Insecticides (3) Sedative/Hypnotics (2) Solvents (46) Terpenes (2) Therapeutics (13) Volatiles (73) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood