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 (8) (-) Anesthetics (2) Antidepressants (3) Antidiabetics (2) Industrial/Environmental Toxins (2) Metals/Elements (1) NPS/Designer Drugs (5) Opiate/Opioid Antagonists (7) Other (1) Solvents (3) Stimulants (8) Therapeutics (1) Vasodilators (2) Test Sub-Category (-) Other (2) Test Test Name 3214B Nitrous Oxide, Blood 3214TI Nitrous Oxide, Tissue