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) (1) Enzyme-Linked Immunosorbent Assay (ELISA) (1) Gas Chromatography (GC) (14) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (2) Headspace Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (21) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type (-) Blood (2) Serum or Plasma (1) Tissue (1) Urine (2) Test Area Therapeutics (2) Test Category Anesthetics (1) Antihistamines (1) Test Sub-Category Barbiturates (1) Opiates/Opioids (1) (-) Other (2) Test Test Name 3214B Nitrous Oxide, Blood 3740B Phenyltoloxamine, Blood