A digoxin test is used to monitor the concentration of the drug in the blood. The dose of digoxin prescribed may be adjusted depending on the level measured. A healthcare practitioner may order one or more digoxin tests when a person begins treatment to determine if the initial dosage is within therapeutic range and then order it at regular intervals to ensure that the therapeutic level is maintained. A digoxin test may also be used to determine if someone’s symptoms are due to an insufficient amount of the drug or to digoxin toxicity.

For congestive heart failure, the ideal range of levels of digoxin in the blood, known as the therapeutic range, may be between 0.5 and 0.8 ng/mL. Each person’s response to medications is different. Many factors, including kidney function and concurrent medications, may be involved. If someone’s symptoms do not improve or if the person is experiencing side effects, then the healthcare provider may need to adjust the digoxin dose up or down according to that person’s needs.

  • Sample of blood serum
  • We perform the test daily