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 (3) (-) Serum or Plasma (1) (-) Tissue (1) Urine (3) Test Area Therapeutics (2) Test Category Antidepressants (2) Test Sub-Category Benzodiazepines (3) Beta Blockers (1) Calcium Channel Blockers (1) NSAIDs (3) Opiates/Opioids (1) Other (11) Stimulants (1) Synthetic Cathinone (1) Toxic Elements (2) (-) Tricyclic (2) Test Test Name 3220SP Nortriptyline, Serum/Plasma 3220TI Nortriptyline, Tissue