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 (1) Analgesics (5) Antianxiety (1) Antidepressants (1) Antidiabetics (1) Antiemetics (1) Antiepileptics/Antiseizures (1) Antihypertensives (2) Antimicrobials (2) Antineoplastics (1) Antipsychotics (1) (-) Gases (1) Hallucinogens (2) Immunosuppressants (1) Muscle Relaxants (2) NMDA Antagonists (1) NPS/Designer Drugs (1) Sedative/Hypnotics (3) Stimulants (3) Volatiles (2) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood