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 Gases (1) Test Sub-Category Alkaloids (3) Antibiotics (2) Antihistamines (3) Antimalarials (2) Benzodiazepines (4) Beta Blockers (4) CNS Stimulants (5) Diuretics (2) Hormones (3) (-) Hydrocarbons (1) Opiates/Opioids (19) Other (51) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (3) Test Test Name 2745B Methane, Blood