Methylmalonic Acid (MMA) Blood Test


A blood test to help diagnose vitamin B12 deficiency.

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Methylmalonic Acid (MMA) Blood Test

About this test

The Methylmalonic Acid test is often used after a vitamin B12 test is low or at the lower end of normal to diagnose vitamin B12 deficiency. It is often used on conjunction with homocysteine to confirm the diagnosis. 

Who is this test for?

This test is for individuals who may have had a low vitamin B12 result or an elevated homocysteine result and wish to confirm their vitamin B12 status. 

How it works

Collect Sample

We send you an easy-to-use kit to collect your blood sample.

Post Sample

Post your sample to our lab in the prepaid envelope provided.

View Results

View results securely in your own personal dashboard.

Important Information

Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.

Tests Included

Vitamin B12 Deficiency

Less than 0.29 does not indicate B12 deficiency.

0.29-0.70 suggests possible B12 deficiency.

Greater than 0.70 consistent with B12 deficiency.

Blood sample collection kit

We will send you your Methylmalonic Acid (MMA) Blood Test blood sample collection kit together with the details of a convenient clinic where you can go and have your sample taken.

Postage & packaging

Your Methylmalonic Acid (MMA) Blood Test includes 1st class postage and packaging for you to send your blood sample directly to our laboratory for analysis. If you live in an area where you cannot rely on the post or you simply want to ensure that your sample arrives at the laboratory the following day, you may wish to send your blood sample guaranteed next day delivery for extra reassurance.

Private laboratory analysis

Your blood sample will be analysed at one of our chosen laboratories. You can be assured of fast, accurate results from one of our accredited independent providers of clinical diagnostic tests.

Interpretation of results

Our medical team will comment on out-of-range blood results and give you follow-up advice where necessary. If you need it, a PDF copy of your Methylmalonic Acid (MMA) Blood Test results can be downloaded for your doctor.

Secure online account

Once you have placed your order you can visit where you can manage your account, track your orders and view your Methylmalonic Acid (MMA) Blood Test results.

Health and Lifestyle tracker

Stay motivated by filling in your online health and lifestyle questionnaire and seeing how improvements in your lifestyle can influence your results. Your medical and family history gives us vital information when interpreting your results.

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