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 (1) Serum or Plasma (1) Test Area (-) Therapeutics (2) Test Category Antidepressants (5) Antiepileptics/Antiseizures (9) Antihistamines (2) Antineoplastics (2) Antipsychotics (8) Antirheumatics (2) Bronchodilators (4) Cholinesterase Inhibitors (2) (-) Diuretics (2) Immunosuppressants (5) Muscle Relaxants (2) Vasodilators (2) Test Sub-Category (-) Other (2) Test Test Name 4525B Torsemide, Blood 4525SP Torsemide, Serum/Plasma