Is Methylmalonic Acid 421 high, normal or dangerous? What does Methylmalonic Acid level 421 mean?

📅 Medical Review Date: April 1, 2026

Your Methylmalonic Acid level of 421 is a High Methylmalonic Acid level.

High Methylmalonic Acid levels may indicate underlying health problems. The normal range is typically between 1 nmol/L and 378 nmol/L. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

The normal Methylmalonic Acid range for men is :1 - 378 nmol/L

Ideal values of Methylmalonic Acid depending on age (male) :

Age	Ideal Methylmalonic Acid value
<5 years	1.042
5-10 years	1.086
10-15 years	1.132
15-20 years	1.18
20-25 years	1.23
25-30 years	1.282
30-35 years	1.336
35-40 years	1.392
40-45 years	1.451
45-50 years	1.512
50-55 years	1.576
55-60 years	1.642
60-70 years	1.711
70-80 years	1.783
80-90 years	1.858
90-100 years	1.936
>100 years	2.018

*Ideal values are calculated based on our database of patient records

Get Advice via Email : Send us your blood test report, and our Methylmalonic Acid experts will review it. You'll receive a detailed analysis and personalized treatment guidance via email within 12 hours. If you have additional blood test results besides Methylmalonic Acid, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

1,51,150

Total number of patients treated

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Normal range of Methylmalonic Acid found among women :1-378 nmol/L

Ideal values of Methylmalonic Acid depending on age (female) :

Age	Ideal Methylmalonic Acid value
<5 years	1.043
5-10 years	1.088
10-15 years	1.135
15-20 years	1.184
20-25 years	1.235
25-30 years	1.289
30-35 years	1.345
35-40 years	1.403
40-45 years	1.464
45-50 years	1.527
50-55 years	1.593
55-60 years	1.662
60-70 years	1.734
70-80 years	1.809
80-90 years	1.887
90-100 years	1.969
>100 years	2.054

If you take a Methylmalonic Acid blood test and the results are not in the normal range (1-378 nmol/L), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the Methylmalonic Acid Test Is Done :

When your doctor orders a Methylmalonic Acid test, it involves a straightforward blood draw to measure your Methylmalonic Acid levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your Methylmalonic Acid test results are usually available within a few hours.

Medical References

• Cleveland Clinic – Methylmalonic Acid Test: What It Is, Procedure, Results & Types
• MedlinePlus – Methylmalonic Acid (MMA) Test
• WebMD – Methylmalonic Acid Test: Types, What to Expect, and More
• NIH – Urinary Methylmalonic Acid as an Indicator of Early Vitamin B12 Deficiency and Its Role in Polyneuropathy in Type 2 Diabetes