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) (1) Sample Type Blood (3) Fluid (1) (-) Serum or Plasma (1) Urine (3) Test Area Therapeutics (1) Test Category (-) Antianxiety (1) Antidepressants (8) Antipsychotics (1) Drugs of Abuse (2) Therapeutics (2) Test Sub-Category (-) Other (1) Test Test Name 1810SP Doxepin and Metabolite, Serum/Plasma