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 (3) (-) Anesthetics (2) Antianxiety (1) Antidepressants (5) Antidiabetics (1) Antihypertensives (2) Industrial/Environmental Toxins (1) Metals/Elements (2) NPS/Designer Drugs (5) Opiate/Opioid Antagonists (2) Sedative/Hypnotics (2) Stimulants (3) Vasodilators (1) Test Sub-Category Other (2) Test Test Name 3214B Nitrous Oxide, Blood 3214TI Nitrous Oxide, Tissue