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 (3) (-) Fluid (1) Serum or Plasma (4) (-) Tissue (1) Test Area Therapeutics (2) Test Category Analgesics (1) Antianxiety (4) (-) Antiarrhythmics (2) Anticholinergics (1) Antidepressants (4) Antihistamines (6) Antihypertensives (1) Antitussives/Cough Suppressants (5) Cholinesterase Inhibitors (1) Diuretics (1) Drugs of Abuse (16) Drugs of Abuse, Therapeutics (6) Industrial/Environmental Toxins (2) NPS/Designer Drugs (3) Pesticides/Insecticides (1) Potassium Channel Blockers (1) Solvents (2) Stimulants (1) Volatiles (1) Test Sub-Category Cardiac Glycosides (2) Test Test Name 1615FL Digoxin, Fluid 1615TI Digoxin, Tissue