Synonyms: Lanoxin

Why It Is Done

To determine if the concentration of digoxin in your blood is at a therapeutic level or to detect toxic levels

Test Overview

The test to measure digoxin is ordered at the beginning of drug therapy to ensure correct dosage. Digoxin takes approximately one to two weeks to reach a steady level in the blood and in the target organ, the heart. A test done at that time will reflect more accurately whether you are receiving the right amount of digoxin. Digoxin levels are monitored routinely at a frequency determined by your doctor after that to verify correct dosage or if any changes occur in drug source, dosage, or other medications taken at the same time. Changes in your health status can also affect levels of digoxin and its ability to control your symptoms. Some physiologic changes that may affect levels of digoxin in the blood kidney function thyroid problems cancer stomach or intestinal illness

How To Prepare

No special preparation is necessary