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) (3) Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (6) (-) Immunoassay (IA) (1) Sample Type Serum or Plasma (1) Test Area Therapeutics (1) Test Category (-) Antiarrhythmics (1) Test Sub-Category Cardiac Glycosides (1) Test Test Name 1613SP Digitoxin, Serum/Plasma