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Trusted to do 100,000+ tests and consultations per month.
Trusted to do 100,000+ tests and consultations per month.
Methylmalonic Acid (MMA) Blood Test

 


METHYLMALONIC ACID (MMA) BLOOD TEST

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£109.00
£109.00 - £109.00
£109.00
£109.00 - £109.00
1 BIOMARKER
12 DAYS
INSTRUCTIONS
FAQ

MMA blood test measures methylmalonic acid levels to diagnose vitamin B12 deficiency accurately.

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



STEP 1 - CHOOSE YOUR SAMPLE COLLECTION OPTION
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GABBY LOGAN - HEALTH AMBASSADOR FOR ONE DAY TESTS

Our amazing Health Ambassador, Gabby Logan, MBE, talks about the importance of preventative testing and why it is important to find the problem before it becomes a problem.

And the best way to do this? Find our what's in your blood, direct from a laboratory you can speak to, at One Day Tests.

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METHYLMALONIC ACID (MMA) BLOOD TEST OVERVIEW

Symptoms that should prompt you to do an MMA test include fatigue, numbness, cognitive changes, and unexplained anaemia, as well as GP recommendation.

Early detection through MMA testing allows for timely treatment, preventing potential nerve damage and other complications associated with prolonged B12 deficiency.

SHARE YOUR HEALTH STORY

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METHYLMALONIC ACID (MMA) BLOOD TEST

The MMA blood test measures methylmalonic acid in your blood, providing a reliable way to detect vitamin B12 deficiency even when standard B12 tests appear normal.

Elevated MMA levels indicate your body isn't getting enough active B12 at the cellular level, helping doctors identify deficiencies earlier and more accurately.

1 BIOMARKER

  1. METABOLISM

    - Methylmalonic Acid (MMA)

  2. UPGRADE

    Need more biomarkers? Add this to the Ultimate Vitamins Blood Test

  1. TURNAROUND TIME

    We are extremely fast, with some results available within hours and others within a working day or less, from the time your sample is in our lab. However, this is not a guarantee and should not be taken as such. This is the guideline turnaround time that can be shorter or longer.


    THIS IS NOT A GUARANTEED TURNAROUND TIME.


    We are extremely proud of our very short turnaround times and a very efficient laboratory processes, you will start receiving results as soon as they are available and have completed clinical validation.


    Whilst we accommodate the shortest of time scales, with some results available within hours, for this particular test the usual turnaround time is: 12 working days.

  1. WILL I HAVE A GENERAL EXPLANATION OF MY RESULTS?

    Yes, our doctors put a huge amount of effort into your online Health Dashboard, which will have explanations of what each biomarker is, the normal reference ranges and what it means if you are outside of them.


    This service is included in the price of all our tests.

  1. CAN I SEE A GP TO DISCUSS MY RESULTS?

    Yes, usually the same or next day.


    One Day Tests has a fantastic clinical team of consultants and GPs. Once you have your results you can book an online video consultation to discuss your results.


    Our clinical team consists of practicing NHS and private GPs, who work closely with our laboratory and can tell you what your blood test results mean for you. Having an integrated laboratory and GP services makes your health journey seamless and extremely efficient.


    This service is not included in the price of the test, it is charged separately, should you wish to book it.

DOCTOR'S COMMENTS

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

DR. ADAM STATEN - GP VIEW AND RED FLAG SYMPTOMS

From a GP’s perspective,all standard serum B12 tests have limitations, results can appear normal even when you are functionally deficient.

The MMA test offers greater diagnostic accuracy by measuring metabolic function rather than circulating levels alone. This helps you identify risks earlier, particularly those presenting with vague neurological symptoms, unexplained anaemia, or cognitive changes that don't align with your B12 results.

Red flag symptoms for the Methylmalonic Acid (MMA) Blood Test

Your Results and Health Dashboard

The results of your Methylmalonic Acid (MMA) 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 Methylmalonic Acid (MMA) Blood Test.

SPECIAL INSTRUCTIONS

Fasting is not required for an MMA blood test.

Clinic appointment - how to prepare for the Methylmalonic Acid (MMA) Blood Test

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

  • Read the instructions in the SPECIAL INSTRUCTIONS section
  • 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.

We look forward to receiving your sample in our lab!

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.

QUICK AND ACCURATE RESULTS DIRECT FROM A LABORATORY.

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. You can email us on hello@onedaytests.com or give us a call on 0127 309 2844.

FREQUENTLY ASKED QUESTIONS

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

FREQUENTLY ASKED QUESTIONS

Here are some of the most frequently asked questions about the Methylmalonic Acid (MMA) Blood Test.

Can I take the MMA test if I'm already supplementing with B12?
You can, but it may affect interpretation. If you've recently started B12 supplements, your MMA levels may already be improving, potentially masking a prior deficiency. For the clearest baseline picture, your doctor may recommend testing before starting supplementation or waiting a specific period after stopping. Discuss timing with your healthcare provider for the most useful results.What do my results mean?

Normal MMA levels suggest adequate B12 function at the cellular level. Elevated levels indicate your body isn't processing B12 effectively, pointing to a likely deficiency even if your serum B12 appears normal. Your should interpret your results alongside your symptoms and medical history to determine the best course of action, or speak to one of our GPs.

What's the difference between an MMA test and a standard B12 test?

A standard B12 test measures the total amount of vitamin B12 circulating in your blood. The MMA test goes deeper, measuring how well your body is actually using that B12 at the cellular level. This makes MMA a more sensitive marker for detecting early or functional deficiencies that standard tests might miss.

Can I take the MMA test if I'm already supplementing with B12?

You can, but it may affect interpretation. If you've recently started B12 supplements, your MMA levels may already be improving, potentially masking a prior deficiency. For the clearest baseline picture, you should test before starting supplementation.

WHY HAVE THE TEST?

Hi, I am Nader Eldarf, I am a Biomedical Scientist in our laboratory and here is why it's important to take this test.

  1. WHY HAVE THE METHYLMALONIC ACID (MMA) BLOOD TEST?

    Vitamin B12 deficiency often goes undetected because standard blood tests can miss it. You might have adequate B12 circulating in your blood but still be deficient at the cellular level where it matters most. The MMA test fills this gap by revealing how effectively your body is actually using B12, catching hidden deficiencies before they cause lasting damage.

    Left untreated, B12 deficiency can lead to serious complications including irreversible nerve damage, cognitive decline, anaemia, and increased risk of cardiovascular issues. Symptoms often develop gradually and can be mistaken for normal ageing or other conditions. By identifying the problem early through MMA testing, you can start treatment promptly and prevent these complications, protecting your long-term neurological health and overall wellbeing.

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.

  1. IS THE METHYLMALONIC ACID (MMA) BLOOD TEST RIGHT FOR YOU?

    If you're experiencing persistent fatigue, tingling or numbness in your hands and feet, memory problems, or unexplained balance issues, an MMA test could provide answers.

    This test is especially useful if you've had a standard B12 blood test that came back normal but your symptoms persist. It's also recommended for vegetarians, vegans, older adults, and anyone with digestive conditions like Crohn's disease, coeliac disease, or a history of gastric surgery, all of which can impair B12 absorption.

    You might also consider this test if you take certain medications long-term, including metformin or proton pump inhibitors, which can affect B12 levels over time. The MMA test offers a clearer picture of how well your body is actually using B12 at the cellular level, catching deficiencies that other tests might miss. Early detection means earlier treatment, helping you avoid potential nerve damage and get back to feeling your best.

  1. SYMPTOMS AND TAGS

    Abdominal pain, Bones, Fatigue, Memory issues, Metallic taste, Nausea, Shortness of breath and Tremors

WHY ARE BLOOD TESTS IMPORTANT?

Health monitoring is very important, you are in charge of your health - look after it.