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) Fluid (1) Serum or Plasma (2) (-) Tissue (1) Test Area Therapeutics (2) Test Category (-) Antiarrhythmics (2) Test Sub-Category (-) Cardiac Glycosides (2) Other (2) Test Test Name 1615B Digoxin, Blood 1615TI Digoxin, Tissue