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Homocysteine Blood Test

Original price £139.00 - Original price £139.00
Original price
£139.00 - £139.00
Current price £139.00

Homocysteine is an amino acid that your body produces. In order for the body to use it, homocysteine is broken down into other substances that the body needs.

  • Biomarkers: 1
  • Turnaround: 2-3 days

Simple and accurate blood test from a laboratory you can speak to.

Step 1. Choose sample collection option

Currently selected option: CLINIC APPOINTMENT

  • No waiting time - add same or next day appointment during checkout.
  • Rapid results - no waiting for the kit, no finger pricking, no posting the sample back.
  • Blood collection from your arm by our professional nurses.
  • Single appointment covers all your tests on the day.
  • We have clinics in London, Hove, Croydon, Guildford, Royal Tunbridge Wells, Cambridge, Maidstone and Crawley.

Clinic too far? Get a home kit by selecting "HOME KIT" as sample option, it's the same test.

About the test

Homocysteine is an amino acid that your body produces. In order for the body to use it, homocysteine is broken down into other substances that the body needs. This process involves B vitamins such as vitamin B12 and folic acid and therefore high levels of homocysteine may be a sign that you are deficient in these vitamins.

Taking B vitamin supplements usually brings down your levels of homocysteine effectively.

High levels of homocysteine are also thought to be a risk factor for cardiovascular disease. High levels of homocysteine may therefore increase your risk of heart attacks and strokes.

Currently, there is no clear evidence that reducing your homocysteine levels reduces your risk of heart attacks and strokes, but finding that you have high levels of homocysteine should prompt you to address other cardiovascular risk factors such as smoking, being overweight, high cholesterol and diabetes.

1 Biomarker


    - Homocysteine


    Need more biomarkers? This biomarker can be added to any panel.


    For most biomarkers our usual turnaround time is 24-48 hours, or less, from the time your sample is in our lab. We do not wait for all the results to complete before sending them to you, so you may start receiving results the same day for most cases, or as results become available.

    We are extremely proud of our very short turnaround times and a very efficient laboratory processes. Whilst we accommodate the shortest of time scales, with some results available within hours, for this particular test the usual turnaround time is:

    2-3 days

Doctor's notes

Hi, I am Dr. Adam Staten and here's my view on this test as a GP and Clinical Director at One Day Tests.

Without treatment, elevated homocysteine increases your risks for dementia, heart disease and stroke, which is why it is extremely important to monitor this biomarker.

Red flag symptoms for the Homocysteine Blood Test

Even if your blood tests are normal, you should see a doctor if you have any of the symptoms below because they may be a sign of serious underlying illness. 

  • Progressive muscle weakness
  • Chest pain, shortness of breath, confusion, memory loss.
  • Unexplained weight loss
  • Progressively severe symptoms of any kind

Your Results and Health Dashboard

The results of your Homocysteine Blood Test will be emailed to you as a secured PDF file, ready for your GP and will also be uploaded to our Health Dashboard area of the website. It’s a unique and powerful tool, powered by our in-house clinical analysis research, to match your biomarkers across test panels and symptoms, as well as provide clinical commentary on all individual biomarkers you tested for.

The health dashboard will also provide "panel level" commentary - a birds eye view of the biomarkers that were tested. This feature allows you to view your test results and clinical commentary, and compare them to previous results, giving you a clear understanding of how your health is progressing.

By using the Health Dashboard, you can identify changes in your biomarkers and make necessary adjustments to your lifestyle. This added value is immense, as it empowers you to monitor your health and make informed decisions about your well-being.

It's free and is available with all of our tests.

Save on continuous monitoring with our subscription plan

The best way to look after your health is to do so regularly. This is easy to do with our continual monitoring plans which give you a discount on future blood tests. You choose the frequency and we'll do the rest.

When you purchase a subscription, we will deliver your home test kits or allow you to book appointments in line with your chosen frequency. You will be able to track your biomarkers over time in our powerful Health Dashboard, where results will be automatically updated for you. There is a minimum of 3 tests with any subscription, after which you can pause/restart/cancel at any time.

Special instructions

Hi, I am Stefania Brown, I am the Laboratory Manager at One Day Tests and here are the lab's special requests for the Homocysteine Blood Test.

This biomarker can only be tested with the sample taken from the vein in one of our own walk-in clinics.

This is because the sample needs to go on ice immediately after venipuncture. It is not, therefore, suitable for home testing kit.

Venepuncture appointment - how to prepare

If you are coming into one of our clinics for the test, this is what you need to do before you arrive:

  • Drink plenty of water about an hour before the appointment.
  • Avoid coffee/tea/energy drinks. Water is good!
  • That’s it! We’ll do the rest.

Home test kit for Homocysteine Blood Test - how it works

Our blood test kits are simple and convenient.

The most important step in doing a blood test at home is to read the instructions very carefully. The process is very simple, but there are a few pitfalls you need to be aware of - you will save yourself a lot of time if you do it right the first time around!

  • Full printed instructions will arrive with your kit - please read them carefully.
  • Drink plenty before taking the sample and warm your hands up in the sink with warm water for a few minutes. This will make your blood flow much better.
  • Fill the tubes to the top line. We don’t need much blood; filling tubes to the top line is about 15 drops of blood.
  • Post the samples on the same day you take them, before midday, Monday to Thursday. If you post it any other time it might get to us late or be stuck at a sorting office over the weekend. You will then have to do it again.
  • Package the sample in the same box the kit came in. Otherwise, Royal Mail or DPD will reject it. The sample tubes go into a pouch, then into a cardboard box, and then into a return envelope. All of this is provided in the kit: please use it.

We look forward to receiving your sample in our lab!

How the finger prick home test kit for Homocysteine Blood Test works - from Dr. Adam Staten

Why choose us?

Hello! My name is Dr. Vinesh Mistry, I am part of the GP team here at One Day Tests and here is why you should trust us to test your blood.

We run our own regulated laboratories and our own accredited clinics. We manufacture our own approved home sample collection kits. Your results are looked after by our fantastic clinical governance team and our super-talented biomedical science team.

When you book your test with us - you book directly with the lab. This means accuracy and responsible duty of care, direct access to the provider and extremely fast turnaround times.

Finally, our customer services rock! You can ask the lab a question any time or you can speak to a real human. It's good to WhatsApp, email on or give us a call on 0845 527 07 67.

Frequently Asked Questions

Hi, I am Lana Nela, Lead Nurse, and here is what we are frequently asked about this test.

Why do you need to screen for homocysteine levels?

This test will help to diagnose a vitamin B12 or folate deficiency. The homocysteine concentration may be elevated before B12 and folate tests become abnormal.

This test is recommended often by nutrition experts as abnormal levels can often point to poor nutrition.

We also screen for people with higher risk of stroke or heart attack.

Can lifestyle changes, such as diet and exercise, help lower homocysteine levels?

Yes, certain lifestyle changes can help lower homocysteine levels, such as a diet rich in vitamins B6, B12, and folate, regular exercise, and not smoking.

Why take this test?

Hi, I am Dr. Marco Esposito and here is why it's important to take this test.
  • You want to find out if abnormal levels of homocysteine are contributing to your symptoms.
  • To monitor your response to vitamin deficiency therapies.
  • To see if your homocysteine levels are in the normal range.

Is this test right for you?

Hi, I am Sandeep Patel, I am the Laboratory Director at One Day Tests. Here are the symptoms that you may wish to address with this test.

If you are on any kind of nutrition or wellness programme, monitoring your homocysteine levels is a must!

It is also a great preventative diagnostics tool, particularly if you have a family history of coronary artery disease but no other known risk factors, for example elevated blood pressure, alcohol excess, poor diet and obesity or smoking.


    Chronic fatigue, Fatigue, Hair loss, Loss of muscle bulk, and Low mood

Why blood tests are important.