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 (GC) (6) (-) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (2) Headspace Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (10) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (4) Sample Type Blood (1) Urine (1) Test Area Therapeutics (2) Test Category (-) Antidepressants (2) Test Sub-Category Tricyclic (2) Test Test Name 8702B Nortriptyline, Blood 8702U Nortriptyline, Urine