Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (2) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (7) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (28) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (2) Sample Type Blood (1) Tissue (1) Test Area Therapeutics (2) Test Category Analgesics (4) (-) Anesthetics (2) Antihistamines (2) Sedative/Hypnotics (3) Solvents (2) Test Sub-Category Other (2) Test Test Name 3214B Nitrous Oxide, Blood 3214TI Nitrous Oxide, Tissue