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 (11) (-) Anesthetics (2) Antianxiety (3) Antidepressants (9) Antidiabetics (2) Antihypertensives (5) NPS/Designer Drugs (7) Opiate/Opioid Antagonists (7) Other (1) Sedative/Hypnotics (5) Solvents (3) Stimulants (8) Test Sub-Category Other (2) Test Test Name 3214B Nitrous Oxide, Blood 3214TI Nitrous Oxide, Tissue