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) Sample Type Blood (2) (-) Serum or Plasma (1) (-) Tissue (1) Urine (2) Test Area Therapeutics (2) Test Category Antidepressants (2) Test Sub-Category (-) Tricyclic (2) Test Test Name 3220SP Nortriptyline, Serum/Plasma 3220TI Nortriptyline, Tissue