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 (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (6) Sample Type Blood (2) Fluid (2) Serum or Plasma (2) Tissue (1) (-) Urine (2) Test Area Therapeutics (2) Test Category (-) Antianxiety (1) Antidepressants (2) (-) Antihistamines (1) Antipsychotics (1) Industrial/Environmental Toxins (1) Other (1) Pesticides/Insecticides (1) Sedative/Hypnotics (2) Solvents (3) Stimulants (1) Volatiles (2) Test Sub-Category Other (2) Test Test Name 1810U Doxepin and Metabolite, Urine 1817U Doxylamine, Urine