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Digoxin
99.00
This test measures the level of digoxin in your blood to ensure safe and effective dosing. It is essential for monitoring toxicity and treatment accuracy.
Turnaround time
5 days
Biomarkers count
1
Same-Day Appointments
UKAS Accredited Labs
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Under 18? Patients under 18 can only be seen at GB Medlabs and Clinilabs, Monday to Friday only.
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Details about Digoxin
What is a Digoxin test?
A Digoxin blood test measures the concentration of Digoxin in your bloodstream. Digoxin is a medication used to treat certain heart conditions, including atrial fibrillation and heart failure.
Because digoxin has a very narrow therapeutic range, levels can easily become too high (toxic) or too low (ineffective). Regular blood monitoring is essential for safety.
Why do I need a Digoxin test?
This test is required for anyone taking digoxin to ensure the medication is within the safe and effective range.
Reasons for testing include:
• Starting digoxin treatment
• Dose adjustment
• Symptoms of possible toxicity
• Kidney function changes (digoxin is cleared by kidneys)
• Elderly patients at higher risk of toxicity
• Monitoring long-term therapy
Symptoms that may prompt testing include:
• Nausea or vomiting
• Blurred or yellow vision
• Irregular heartbeat
• Confusion or dizziness
• Loss of appetite
Benefits of the test
1. Prevents digoxin toxicity
2. Ensures correct therapeutic dose
3. Essential for heart failure and AF monitoring
4. Identifies risk from kidney changes
5. Protects elderly patients
6. Guides safe medication adjustments
7. Detects early overdose signs
8. Provides reassurance for ongoing treatment
Expanded benefit explanation
Because the difference between an effective dose and a toxic dose is small, this test is critical for patient safety when using digoxin.
Step-by-step — How testing works
We offer two UK-wide testing options:
Clinic testing
• Choose your nearest UK clinic
• Blood sample collected at the correct timing after dose
• Laboratory analysis performed
• Results securely returned
Home visit (+£60)
• Phlebotomist visits you
• Blood sample collected safely
• Sample sent to lab
• Results delivered confidentially
Your results explained
Low levels
Below therapeutic range – medication may be ineffective.
Normal therapeutic range
Typical UK therapeutic range: 0.5 – 2.0 ng/mL
Indicates safe and effective dosing.
High levels
Above range – risk of digoxin toxicity requiring urgent review.
How It Works
Simple steps to get your results
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Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
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Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
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Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
Frequently Asked Questions
It measures the concentration of digoxin in your blood to ensure safe and effective dosing.
Digoxin levels fluctuate after dosing; testing 6–12 hours after the last dose provides the most accurate result.
No fasting is required.
Yes. Diuretics, antibiotics, and heart medications may alter digoxin levels.
Typically after dose changes, if symptoms occur, or periodically during long-term therapy.
Yes. Monitoring is especially important in older adults due to increased toxicity risk.
Yes. We offer at-home phlebotomy blood draws across multiple UK locations.
Testing is performed in UKAS-accredited laboratories using validated assays.
Results are usually available within 10 business days.
A GP consultation is optional, but strongly recommended if levels are outside the therapeutic range.
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