Why should I take a blood test for ED?

Erectile dysfunction can be an early warning sign of various health problems. A blood test checks key markers like cholesterol, blood sugar (HbA1c), and testosterone, which all play a role in circulation, hormone balance, and energy levels. Low vitamin D can also affect mood and wellbeing. By understanding these results, you and your clinician can get to the root cause of your ED and take steps to improve both your sexual health and your overall health.

How frequently should I track these markers?

That depends on your health and what your results show. If your cholesterol, HbA1, or testosterone levels are out of range, your clinician may recommend re-testing every 3–6 months to see how lifestyle changes or treatments are working. If everything comes back within normal limits, once a year may be enough. Regular checks help spot changes early, so you can take action before they turn into bigger problems.

How do you use a home blood test?

Each blood test is easy to use, even if you’ve never used a home blood test kit before. It only takes a small amount of preparation to successfully collect a blood sample and all the equipment you need to do so is included in the kit. A summary of how to use the tests: Wash your hands in warm water for 4 minutes and then dry them. Use the lancet provided to prick your finger and collect a blood sample. Post your sample to our accredited partner laboratory using the prepaid envelope included with your test. Full instructions are provided with your test, which you should read thoroughly before use to ensure the best results. To learn more about how to take a blood test at home, click here .

Can I use this kit without professional supervision?

Yes. It’s designed to be taken at home and we’ve included detailed instructions to help you through the process. We’ll also break down your results into simple, easy-to-understand language, so you’ll learn more about your markers and get better direction towards your next steps for management, if needed.

How long do blood test results take?

You should receive your blood test results three to five working days after you post your blood samples. You’ll get an email notifying you that your results have arrived in your Numan account, so keep an eye on your inbox so you don’t miss them. Additionally, you’ll receive a written review of your results from one of our clinicians, which you can read alongside your results to help you understand them. Once they’re in your account, you can view your results any time you wish. You can also view them in-app and save your results as a PDF to help you keep track of them (and show them to your GP if need be).

If my markers show significant shifts, what’s the next step?

Small changes to your biomarkers are normal and generally nothing to worry about. However, any significant changes in your health markers should prompt a discussion with a healthcare professional. They can provide context, possible explanations, and guidance.

Can the test identify any undiagnosed health issues?

A standard blood test usually looks at general health markers like kidney or liver function. An ED blood test, on the other hand, is designed to focus on the factors most often linked to erection problems. That means it checks things like cholesterol, HbA1c, testosterone, and vitamin D, all of which can directly influence sexual health and blood flow. In other words, it’s not just about spotting problems, but about uncovering the root causes that may be affecting your erections.

How is this test different from regular blood tests?

Unlike generic blood tests, this test specifically focuses on biomarkers that are crucial in understanding the reasons why ED may be happening. It’s tailor-made to give you insights related to cardiovascular health, diabetes risk, and other vital parameters associated with ED.

Save 30% on your first blood test + free sleep supplement

Men's health

ERECTILE DYSFUNCTION BLOOD TEST

Erectile dysfunction (ED) can be a sign of something deeper. A blood test helps uncover the root cause, so you can find a solution that works for you.

Biomarkers tested: 12

Results received in: 3-5 days

From£78.00£54.60 / kit

From£78.00 / kit

Get started

Why test your erectile dysfunction?

Erectile dysfunction is rarely just about sex. It’s often the first warning sign for deeper health issues like heart disease, diabetes, or low testosterone. A simple blood test won't tell you if you have ED, but it can uncover what’s really going on beneath the surface, giving you answers to why it may be happening. The sooner you know the cause, the sooner you can take control not just of your erections, but of your long-term health.

Detect potential health risks

Around 40% of men with erectile dysfunction have an underlying health issue that may contribute to their symptoms.¹

Low testosterone

Testosterone levels in men naturally begin to decline starting around age 30.²

Cardiovascular disease

Men with erectile dysfunction are 59% more likely to have heart disease.³

Stroke

Men with erectile dysfunction are 34% more likely to have a stroke.³

Diabetes

Over 65% of men with diabetes have ED.⁴

Low testosterone

Testosterone levels in men naturally begin to decline starting around age 30.²

Cardiovascular disease

Men with erectile dysfunction are 59% more likely to have heart disease.³

Stroke

Men with erectile dysfunction are 34% more likely to have a stroke.³

Diabetes

Over 65% of men with diabetes have ED.⁴

Listen to the canary

When erections start to falter, it’s often less about desire and more about biology sounding a warning alarm.

The blood vessels in the penis are some of the smallest in the body, which means they’re often the first to show signs of trouble. Blockages, poor circulation, or hormonal imbalances can all play out here long before they cause bigger problems like heart attacks or diabetes.^1-4

By checking markers like cholesterol, HbA1c (a measure of blood sugar), and testosterone, clinicians can spot whether ED is a symptom of something deeper.

How your blood test holds the answers

We provide a comprehensive assessment of key health areas linked to ED to help identify possible causes.

Testosterone levels

Optimal levels of testosterone ensure healthy bodily functions. Lower levels of the hormone can impact libido, sexual function, energy, and mood.

Heart disease

Erectile dysfunction can be an early warning sign of coronary heart disease. This test will help you to determine your risk and take action sooner.

Cholesterol health

High cholesterol levels impact blood flow around the body and can therefore be a contributor to erectile dysfunction. This test will give you a clear picture of your levels.

Testosterone levels

Optimal levels of testosterone ensure healthy bodily functions. Lower levels of the hormone can impact libido, sexual function, energy, and mood.

Heart disease

Erectile dysfunction can be an early warning sign of coronary heart disease. This test will help you to determine your risk and take action sooner.

Cholesterol health

High cholesterol levels impact blood flow around the body and can therefore be a contributor to erectile dysfunction. This test will give you a clear picture of your levels.

BIOMARKERS

Which biomarkers are tested?

Click on each biomarker to get insights into what it is and how it affects your health.

Triglycerides Cholesterol LDL HDL Chol:HDL Ratio Non-HDL Chol HbA1c Total testosterone Free testosterone SHBG Vitamin D Albumin

NUMAN BLOOD TESTS

How it works

STEP ONE

Order your at-home test

Order your at-home test and get free 48-hour letterbox delivery.

STEP TWO

Collect your blood sample

Follow the simple instructions in your blood test. Return your sample for free.

STEP THREE

Get personalised results

Get your personalised results with actionable insights from our experts in 3-5 days.

Pause or cancel anytime

How to collect your sample

Free, discreet delivery

No names, no logos, no delivery fee.

Ongoing clinical support

Access expert clinicians and medical advice.

Pause or cancel any time

You're always in control of your treatment.

Innovative treatments

Advanced, clinically-proven medications.

Rated excellent on Trustpilot

4.5* from over 30,000 people like you.

Trusted

Regulated by the Care Quality Commission.

UK licensed

Medications and clinicians.

Free, discreet delivery

No names, no logos, no delivery fee.

Ongoing clinical support

Access expert clinicians and medical advice.

Pause or cancel any time

You're always in control of your treatment.

Innovative treatments

Advanced, clinically-proven medications.

Rated excellent on Trustpilot

4.5* from over 30,000 people like you.

Trusted

Regulated by the Care Quality Commission.

UK licensed

Medications and clinicians.

Free, discreet delivery

No names, no logos, no delivery fee.

Ongoing clinical support

Access expert clinicians and medical advice.

Pause or cancel any time

You're always in control of your treatment.

Innovative treatments

Advanced, clinically-proven medications.

Rated excellent on Trustpilot

4.5* from over 30,000 people like you.

Trusted

Regulated by the Care Quality Commission.

UK licensed

Medications and clinicians.

UK DOCTORS AND CLINICIANS

Your expert team

Specialists in medicine, nutrition, performance, and diagnostics.

Dr David Weinstein

Men's Health Medical Lead

MBBS MRCGP PGCERT Med Ed.

Mo Dekmak

Head of Clinical Product

MPharm PgDip IPresc

Dr Dimitris Schizas

Numan Doctor

MBBS MRCGP MSC BSSM

Dr Michael Lacey

Numan Doctor

MBChB BSc (Hons) MRCGP

Dr Alexandra Davidson

Numan Doctor

BSc (Hons) MBBS MRCGP AFHEA MA (Hons) AFMCP

Abby Watts

Senior Nurse Prescriber

BSc Adult Nursing, IP

Dr David Weinstein

Men's Health Medical Lead

MBBS MRCGP PGCERT Med Ed.

Mo Dekmak

Head of Clinical Product

MPharm PgDip IPresc

Dr Dimitris Schizas

Numan Doctor

MBBS MRCGP MSC BSSM

Dr Michael Lacey

Numan Doctor

MBChB BSc (Hons) MRCGP

Dr Alexandra Davidson

Numan Doctor

BSc (Hons) MBBS MRCGP AFHEA MA (Hons) AFMCP

Abby Watts

Senior Nurse Prescriber

BSc Adult Nursing, IP

FAQS

Your questions answered

REAL PEOPLE, REAL IMPACT

Over 500,000 people have come to us to improve their health

I put off getting a private blood test for 12 months and felt terrible for all of that time. If I’d gone ahead 12 months ago my issues could have been resolved then.

Will

I have been trying through the NHS for 3 years and had no success. Once Numan highlighted what the deficiency was I got my doctor to confirm the results which were indeed accurate.

Craig

Refreshingly quick and easy to complete. The results were back in two working days with a succinct, clear and useful analysis along with the full results.

Knowledge

Blood tests: what you need to know

erections

4 minute read

Blood pressure medication and erectile dysfunction: everything you need to know

Blood pressure medication is commonly prescribed when lifestyle changes, such as diet and exercise, aren’t enough to lower your high blood pressure. But as well as lowering your blood pressure, is the medication lowering your libido?

testosterone

3 minute read

From energy to mood: the vital role of hormones in men’s health

Hormones play a critical role in men’s health, and when they go haywire, the effects can be significant.

erections

3 minute read

The link between diabetes & erectile dysfunction in men

Erectile dysfunction is common in men that are affected by diabetes. We take a look at why this is, and how you can help to maintain your erectile function if you have it.

testosterone

5 minute read

Why do so many men get misdiagnosed with depression when they have low testosterone?

There's been a surge in interest in men's mental health in recent years, and all for good reason too—we want our fellow men to speak up. Yet, as awareness grows, so too does the propensity for misdiagnosis. Many non-specialist physicians are quick to diagnose depression without a deeper investigation into the biochemical roots of distress.

erections

4 minute read

Blood pressure medication and erectile dysfunction: everything you need to know

testosterone

3 minute read

From energy to mood: the vital role of hormones in men’s health

Hormones play a critical role in men’s health, and when they go haywire, the effects can be significant.

erections

3 minute read

The link between diabetes & erectile dysfunction in men

Erectile dysfunction is common in men that are affected by diabetes. We take a look at why this is, and how you can help to maintain your erectile function if you have it.

testosterone

5 minute read

Why do so many men get misdiagnosed with depression when they have low testosterone?

References

^{Li JZ, Maguire TA, Zou KH, Lee LJ, Donde SS, Taylor DG. Prevalence, comorbidities, and risk factors of erectile dysfunction: Results from a prospective real-world study in the United Kingdom. International journal of clinical practice. 2022;2022: 5229702.}
^{Kanabar R, Mazur A, Plum A, Schmied J. Correlates of testosterone change as men age. The aging male: the official journal of the International Society for the Study of the Aging Male. 2022;25(1): 29–40.}
^{Zhao B, Hong Z, Wei Y, Yu D, Xu J, Zhang W. Erectile Dysfunction Predicts Cardiovascular Events as an Independent Risk Factor: A Systematic Review and Meta-Analysis. Journal of Sexual Medicine. 2019;16(7):1005-1017.}
^{Kitaw TA, Abate BB, Tilahun BD, Yilak G, Rede MB, Getie A, et al. The global burden of erectile dysfunction and its associated risk factors in diabetic patients: an umbrella reviews. BMC Public Health [Internet]. 2024;24(1):2816.}

Save 30% on your first blood test + free sleep supplement

Get started

DEEP DIVE INTO YOUR HEALTH

Understand root causes and track key biomarkers with regular blood tests.

Get started

AS SEEN IN

Updated: 04/03/2026

ERECTILE DYSFUNCTION BLOOD TEST

Why test your erectile dysfunction?

Detect potential health risks

Testosterone levels in men naturally begin to decline starting around age 30.2

Men with erectile dysfunction are 59% more likely to have heart disease.3

Men with erectile dysfunction are 34% more likely to have a stroke.3

Over 65% of men with diabetes have ED.4

Testosterone levels in men naturally begin to decline starting around age 30.2

Men with erectile dysfunction are 59% more likely to have heart disease.3

Men with erectile dysfunction are 34% more likely to have a stroke.3

Over 65% of men with diabetes have ED.4

Listen to the canary

How your blood test holds the answers

BIOMARKERS

Which biomarkers are tested?

NUMAN BLOOD TESTS

How it works

STEP ONE

Order your at-home test

STEP TWO

Collect your blood sample

STEP THREE

Get personalised results

Your health partner

Precision diagnostics for proactive health

UK DOCTORS AND CLINICIANS

Your expert team

We're here to help

Getting to the core of erectile dysfunction

Samantha

Greg

FAQS

Your questions answered

Why should I take a blood test for ED?

How frequently should I track these markers?

How do you use a home blood test?

Can I use this kit without professional supervision?

How long do blood test results take?

If my markers show significant shifts, what’s the next step?

Can the test identify any undiagnosed health issues?

How is this test different from regular blood tests?

REAL PEOPLE, REAL IMPACT

Over 500,000 people have come to us to improve their health

Knowledge

Blood tests: what you need to know

References

Save 30% on your first blood test + free sleep supplement

AS SEEN IN

Testosterone levels in men naturally begin to decline starting around age 30.2

Men with erectile dysfunction are 59% more likely to have heart disease.3

Men with erectile dysfunction are 34% more likely to have a stroke.3

Over 65% of men with diabetes have ED.4

Testosterone levels in men naturally begin to decline starting around age 30.²

Men with erectile dysfunction are 59% more likely to have heart disease.³

Men with erectile dysfunction are 34% more likely to have a stroke.³

Over 65% of men with diabetes have ED.⁴

Testosterone levels in men naturally begin to decline starting around age 30.²

Men with erectile dysfunction are 59% more likely to have heart disease.³

Men with erectile dysfunction are 34% more likely to have a stroke.³

Over 65% of men with diabetes have ED.⁴

Testosterone levels in men naturally begin to decline starting around age 30.²

Men with erectile dysfunction are 59% more likely to have heart disease.³

Men with erectile dysfunction are 34% more likely to have a stroke.³

Over 65% of men with diabetes have ED.⁴