Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type (-) Blood (2) Serum or Plasma (2) Urine (1) Test Area Therapeutics (2) Test Category (-) Antidepressants (2) Test Sub-Category Benzodiazepines (1) (-) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (2) Tricyclic (3) Test Test Name 1491B Desvenlafaxine, Blood 4666B Duloxetine, Blood