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 (-) Therapeutics (2) Test Category Analgesics (5) (-) Anesthetics (2) Antiarrhythmics (5) Anticholinergics (3) Antidepressants (3) Antidiabetics (4) Antiepileptics/Antiseizures (21) Antihistamines (7) Antineoplastics (2) Antipsychotics (11) Appetite Suppressants (3) Immunosuppressants (3) Industrial/Environmental Toxins (1) Muscle Relaxants (3) Opiate/Opioid Antagonists (7) Other (1) Sedative/Hypnotics (3) Stimulants (2) Vasodilators (3) Test Sub-Category (-) Other (2) Test Test Name 3214B Nitrous Oxide, Blood 3214TI Nitrous Oxide, Tissue