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) (24) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (54) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (4) (-) Immunoassay (IA) (1) (-) Spectrofluorometry (SF) (1) Sample Type Serum or Plasma (2) Test Area (-) Therapeutics (2) Test Category Antiarrhythmics (1) Muscle Relaxants (1) Test Sub-Category Cardiac Glycosides (1) Other (1) Test Test Name 1439SP Dantrolene, Serum/Plasma 1613SP Digitoxin, Serum/Plasma