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 (5) Fluid (1) Serum or Plasma (6) (-) Tissue (1) (-) Urine (1) Test Area Therapeutics (2) Test Category Analgesics (1) Antianxiety (3) (-) Antiarrhythmics (1) Anticholinergics (1) Antidepressants (4) Antihistamines (4) (-) Antihypertensives (1) Antitussives/Cough Suppressants (5) Diuretics (1) Drugs of Abuse (13) Drugs of Abuse, Therapeutics (4) Industrial/Environmental Toxins (2) NPS/Designer Drugs (3) Pesticides/Insecticides (1) Potassium Channel Blockers (1) Solvents (2) Stimulants (1) Volatiles (1) Test Sub-Category Calcium Channel Blockers (1) Cardiac Glycosides (1) Test Test Name 1615TI Digoxin, Tissue 1640U Diltiazem, Urine