Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (4) Enzyme-Linked Immunosorbent Assay (ELISA) (4) (-) Gas Chromatography (GC) (2) Gas Chromatography/Mass Spectrometry (GC/MS) (5) Headspace Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (8) Sample Type Blood (34) (-) Fluid (2) Serum or Plasma (21) Tissue (4) Urine (22) Test Area Therapeutics (2) Test Category Antianxiety (1) Antidepressants (1) Test Sub-Category Other (2) Test Test Name 1810FL Doxepin and Metabolite, Fluid 4655FL Antidepressants Panel 1, Fluid