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) (10) Enzyme Immunoassay (EIA) (3) Gas Chromatography (GC) (15) (-) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (2) Headspace Gas Chromatography (GC) (9) Spectrophotometry (SP) (1) Sample Type Blood (1) Urine (1) Test Area Therapeutics (2) Test Category (-) Antianxiety (2) Antidepressants (2) Test Sub-Category Other (2) Test Test Name 8705B Doxepin and Metabolite, Blood 8705U Doxepin and Metabolite, Urine