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) (1) Sample Type Blood (1) (-) Tissue (1) Test Area Therapeutics (1) Test Category Analgesics (3) (-) Anesthetics (1) Antianxiety (1) Antidepressants (5) Antihypertensives (1) Metals/Elements (2) NPS/Designer Drugs (3) Opiate/Opioid Antagonists (3) Sedative/Hypnotics (1) Solvents (3) Stimulants (3) Test Sub-Category Other (1) Test Test Name 3214TI Nitrous Oxide, Tissue