DIGOXIN (LANOXIN) LEVEL TEST
(Flat ₹101 OFF - Sanovra Lab)
Report Time: Next Day Evening (Cutoff 4:30 PM) | Sample: Blood (Serum) | Test Code: BC093
Digoxin (brand name Lanoxin) is a powerful cardiac medication used to treat heart failure and irregular heartbeats (such as Atrial Fibrillation). It works by helping the heart beat stronger and with a more regular rhythm.
However, Digoxin has a Narrow Therapeutic Index. This means the amount of medicine needed to help your heart is dangerously close to the amount that can poison you. The Digoxin Level Test measures the exact amount of the drug in your blood to ensure you are in the safe, effective zone.
Warning Signs of Digoxin Toxicity
Because the body eliminates Digoxin slowly through the kidneys, it can easily build up to toxic levels, especially in older adults or those with kidney problems. You should get tested immediately if you experience:
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➤Gastrointestinal Issues: Severe nausea, vomiting, or loss of appetite.
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➤Vision Changes: Blurred vision, seeing yellow-green halos around objects, or flashes of light.
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➤Neurological Signs: Confusion, dizziness, and extreme fatigue.
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➤Cardiac Signs: A very slow heartbeat (bradycardia) or feeling new, irregular palpitations.
Important: Timing the Blood Draw
Blood must be drawn at least 6 to 8 hours AFTER your last dose of Digoxin. If it is drawn too soon after taking your pill, the test will show a falsely high level because the drug hasn't had time to distribute into your heart tissue yet. Ideally, the blood should be drawn right before your next scheduled dose.
Interpreting Your Results
The target range depends slightly on what heart condition is being treated (Heart Failure vs. Atrial Fibrillation). Your cardiologist will determine your specific goal.
| Digoxin Level (ng/mL) | Interpretation |
|---|---|
| 0.5 – 0.9 ng/mL | Optimal for Heart Failure. Safe and effective range. |
| 0.8 – 2.0 ng/mL | Optimal for Arrhythmias (A-Fib). Safe and effective range. |
| Greater than 2.0 ng/mL | Toxic Range. High risk for Digoxin toxicity and fatal arrhythmias. Immediate medical intervention may be required. |
Frequently Asked Questions (FAQs)
Yes. Low Potassium (Hypokalemia) makes the heart much more sensitive to Digoxin. You can suffer from Digoxin toxicity even if your blood levels are normal if your potassium is too low. Doctors often check Kidney function and Potassium alongside this test.
No, fasting is not required. However, the exact time of your last dose must be communicated to the lab technician.
Usually, it is checked when you first start taking the medication to find the right dose, if your doctor changes your dose, or if you show symptoms of toxicity. Routine checks are not required if you are stable.
Protect Your Heart Health
Ensure your cardiac medication is in the safe zone. Book your Digoxin Level Test today at Sanovra Lab.
Disclaimer: The information provided here is for educational purposes only and does not constitute medical advice. Medication doses should never be altered without consulting your Cardiologist.