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) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (1) (-) Serum or Plasma (1) (-) Tissue (1) Test Area Therapeutics (2) Test Category Analgesics (4) (-) Anesthetics (1) Antianxiety (1) Antidepressants (3) Antidiabetics (1) Antihypertensives (2) Industrial/Environmental Toxins (1) Metals/Elements (2) NPS/Designer Drugs (3) Opiate/Opioid Antagonists (2) (-) Other (1) Sedative/Hypnotics (2) Stimulants (3) Therapeutics (1) Vasodilators (1) Test Sub-Category Other (2) Test Test Name 3214TI Nitrous Oxide, Tissue 3225SP Nuedexta®, Serum/Plasma