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) (2) Sample Type Blood (1) Tissue (1) Test Area Exposure (31) (-) Therapeutics (2) Test Category Analgesics (41) (-) Anesthetics (2) Antacids (5) Antianxiety (6) Antiarrhythmics (8) Anticholinergics (3) Antidepressants (21) Antidiabetics (4) Antiepileptics/Antiseizures (27) Antihistamines (7) Antihypertensives (13) Antimicrobials (5) Antineoplastics (2) Antipsychotics (13) Antispasmodics (3) Appetite Suppressants (3) Decongestants (4) Immunosuppressants (3) Industrial/Environmental Toxins (1) Muscle Relaxants (3) Opiate/Opioid Antagonists (7) Other (1) Sedative/Hypnotics (10) Stimulants (6) Vasodilators (3) Test Sub-Category Other (2) Test Test Name 3214B Nitrous Oxide, Blood 3214TI Nitrous Oxide, Tissue