Advanced cardiovascular risk checkBNP (B-type Natriuretic Peptide) Blood Test
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BNP (B-type Natriuretic Peptide) Blood Test

£98 ✓ In Stock

What's covered in the price: Laboratory-supplied test kit with sample collection materials and prepaid return packaging. Results turnaround varies by test — see the estimated turnaround time shown above.
Results ready within 3 working days

Your sample goes to a UKAS accredited laboratory meeting ISO 15189 standards.

Date of birth required

After you receive your order confirmation email, please reply with your date of birth.

Blood sample
Clinic visit
(phlebotomy charges apply)
CQC registered Accredited UK labs ISO 15189

How it works

Your testing journey

From order to results in four simple steps. Full transparency on where each step happens and what it costs.

1
Medi Test Direct kit delivered by post

Receive your kit by post

Dispatched same working day if ordered before 3pm. Royal Mail Tracked delivery, typically 1–3 working days. 90% of kits arrive within 24 hours.

2
Clinic sample collection

Visit a partner clinic

Book a phlebotomy appointment at one of our 365+ UK partner clinics. Take your kit with you — the phlebotomist will collect your sample using the materials provided.

Phlebotomy fee applies (paid at clinic)
3
Venous blood draw at a clinic

Venous blood draw at a clinic

A trained phlebotomist takes a small blood sample from a vein in your arm using the vacutainers provided in your kit. The appointment takes around 10 minutes.

4
Return sample by prepaid envelope

Return by prepaid envelope

Seal your sample in the biohazard bag provided and drop it in any Royal Mail postbox using the prepaid Tracked 24 envelope. Post Monday–Thursday for best results.

The BNP (B-type Natriuretic Peptide) Blood Test measures NT-proBNP (N-terminal pro-B-type natriuretic peptide), a hormone released by your heart when it's under strain. When the heart muscle is stretched or working harder than normal to pump blood—such as in heart failure—it produces increased amounts of this protein. BNP testing is widely used in clinical practice to help assess heart function and is one of the most valuable blood markers for evaluating whether the heart is under stress. This test provides important information about your cardiac health that can guide further evaluation and management.

This test is ideal for anyone experiencing symptoms that might indicate heart problems, such as shortness of breath (especially during exertion or when lying flat), unexplained fatigue, swelling in the legs, ankles, or feet (oedema), or reduced exercise tolerance. It's also useful for people with existing heart conditions who want to monitor their cardiac function, those with risk factors for heart disease (such as high blood pressure, diabetes, or previous heart attack), and anyone wanting to include cardiac health assessment in their health monitoring. BNP levels increase when heart failure symptoms worsen and decrease when the condition stabilises, making it useful for both initial assessment and ongoing monitoring. Results outside the normal range may need a follow-up with your GP.

What's covered in the price: You receive a venous blood collection kit and professional laboratory analysis. Because this test requires a venous blood draw, you'll need to arrange collection with a qualified phlebotomist—either at a clinic near you or through your own arrangements. A phlebotomy fee may apply separately. Your results will be ready within 3 working days.

Venous Blood Collection Kit

This kit is sent to you and taken to your chosen clinic. The phlebotomist will collect your sample using the materials provided.

  1. 1Vacutainer blood collection tubes
  2. 2Needle and butterfly needle
  3. 3Tourniquet
  4. 4Alcohol swab
  5. 5Cotton wool and gauze
  6. 6Adhesive plaster
  7. 7Biohazard specimen bag
  8. 8Prepaid return envelope (Royal Mail Tracked 24)
  9. 9Laboratory request form
  10. 10Instructions for the phlebotomist
Fasting: Fasting is not required for this test. You can eat and drink normally before your blood draw. Timing: There is no specific time of day requirement for this test. NT-proBNP levels are relatively stable throughout the day. Exercise: Avoid strenuous exercise for 24 hours before testing if possible. Intense physical activity can temporarily affect BNP levels. Medications: Continue taking all prescribed medications as normal, including any heart medications. Make a note of what you're taking so results can be interpreted appropriately. Do not stop or change any medications without consulting your doctor. Current Symptoms: If you're experiencing severe symptoms such as significant shortness of breath at rest, chest pain, or severe swelling, please seek urgent medical attention rather than waiting for test results. This test is for monitoring and screening purposes, not for emergency assessment. Factors Affecting Results: Several factors can influence NT-proBNP levels beyond heart function. Levels naturally increase with age and are generally higher in women than men. Kidney disease can cause elevated BNP because the kidneys help clear this protein from the blood. Obesity is associated with lower BNP levels (which can potentially mask heart problems). Atrial fibrillation and other arrhythmias can elevate BNP. These factors will be considered when interpreting your results.

NT-proBNP is a hormone released by the heart muscle cells (cardiomyocytes) when the heart is under strain. When the ventricles (the heart's main pumping chambers) are stretched or experience increased pressure—such as occurs in heart failure—they produce a precursor protein called proBNP, which is then cleaved into two fragments: the active hormone BNP (B-type natriuretic peptide) and the inactive NT-proBNP. Both are released into the bloodstream, but NT-proBNP has a longer half-life, making it more stable and easier to measure accurately in the laboratory. Higher levels indicate that the heart is working harder than normal to pump blood around the body. NT-proBNP is primarily used to help assess for heart failure—a condition where the heart cannot pump blood efficiently enough to meet the body's needs. In clinical practice, a normal NT-proBNP level is very helpful for 'ruling out' heart failure as a cause of symptoms like breathlessness. Conversely, elevated levels indicate cardiac strain and warrant further investigation. NT-proBNP levels correlate with the severity of heart failure—they increase as symptoms worsen and decrease when the condition stabilises with treatment. This makes NT-proBNP useful both for initial assessment and for monitoring existing heart conditions over time. The test can help assess how well heart failure treatment is working. Several factors influence NT-proBNP levels independently of heart failure. Levels naturally rise with age (age-specific reference ranges apply). Women typically have higher levels than men. Kidney disease elevates NT-proBNP because the kidneys help clear it from the blood—this can complicate interpretation in people with reduced kidney function. Atrial fibrillation and other arrhythmias increase levels. Acute infections, sepsis, and pulmonary embolism can also cause elevation. Interestingly, obesity is associated with lower NT-proBNP levels, which means heart failure might be underestimated in obese patients. Your results will be interpreted with these factors in mind. Results outside the normal range may need a follow-up with your GP or cardiologist.

Medical Disclaimer

This test is for screening and information only — it is not a medical diagnosis or professional advice. Please have your results reviewed by a qualified doctor or healthcare provider who can explain what they mean for your personal health situation. If your results show anything outside the normal range, or if you're worried about your health, see your doctor as soon as you can. Don't change any medications or treatments based on these results alone — always talk to your healthcare provider first.

NO CLINICS, NO QUEUES, NO HASSLE

Four steps to clarity

Pick your panel 01

Pick your panel

Browse over 200 clinically designed test kits and choose the one that fits your goals.

Kit to your door 02

Kit to your door

Everything you need arrives in discreet packaging with step-by-step instructions inside.

Collect your sample 03

Collect your sample

Follow the simple instructions in your kit — whether it's a finger-prick at home or a venous draw at a partner clinic.

Insights delivered 04

Insights delivered

Clear, easy-to-understand results sent to you online with actionable health guidance.

Frequently asked questions

This test measures NT-proBNP (N-terminal pro-B-type Natriuretic Peptide). Check the full biomarker list on this page for detailed descriptions of each marker and what it tells you about your health.

Check the Special Instructions section on this page. As a general rule, if the panel includes cholesterol, triglycerides, glucose, or insulin, fast for 8-12 hours. For most hormone, vitamin, and antibody tests, fasting is not required. Morning collection (7-10am) is preferred.

Follow the instructions in your kit. For finger-prick tests: warm your hands, use the lancet as directed, fill the tube to the marked line. For venous tests: attend a phlebotomy clinic with your laboratory request form. Post your sample the same day — avoid Fridays and bank holidays.

Results are typically available within the timeframe shown on this page. You will receive a notification when ready to view online. Results include reference ranges and guidance.

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