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) (25) Enzyme Immunoassay (EIA) (8) Gas Chromatography (GC) (24) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (4) Gas Chromatography/Mass Spectrometry (GC/MS) (4) Headspace Gas Chromatography (GC) (14) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (68) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (6) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (3) (-) Immunoassay (IA) (1) Spectrofluorometry (SF) (1) Sample Type Fluid (1) Serum or Plasma (1) Test Area (-) Drugs of Abuse (1) (-) Therapeutics (1) Test Category Antiarrhythmics (1) Drugs of Abuse (1) Test Sub-Category Cardiac Glycosides (1) Other (1) Test Test Name 1613SP Digitoxin, Serum/Plasma 1876FL Drug Screen - Expanded, Fluid