Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme-Linked Immunosorbent Assay (ELISA) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Sample Type Blood (16) Fluid (5) Serum or Plasma (14) (-) Tissue (2) Urine (10) Test Area Therapeutics (2) Test Category (-) Analgesics (1) (-) Anesthetics (1) Antidepressants (2) Antiepileptics/Antiseizures (1) Antihistamines (1) Antipsychotics (1) Metals/Elements (1) Pesticides/Insecticides (1) Stimulants (2) Volatiles (1) Test Sub-Category Opiates/Opioids (1) Other (1) Test Test Name 3214TI Nitrous Oxide, Tissue 3236TI Opiates Screen, Tissue