Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) Enzyme-Linked Immunosorbent Assay (ELISA) (23) Enzyme Immunoassay (EIA) (8) Gas Chromatography (GC) (2) Gas Chromatography/Mass Spectrometry (GC/MS) (7) Headspace Gas Chromatography (GC) (11) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (8) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (8) (-) 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