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Iron / Anemia

Methylmalonic Acid (MMA)

Also known as: MMA test

CPT 84460Quest 861LabCorp 322000
When to Seek Prompt Care

No common urgent flag from this test alone

What It Measures

This test checks how much methylmalonic acid (MMA) is in your blood or pee. MMA is a chemical that helps your body use vitamin B12.

Why It's Ordered

Doctors often order this test to check for low vitamin B12. This is especially true if the low levels are new or not very bad. The test helps doctors see if your body is using vitamin B12 correctly.

Reference Range

Reference ranges for MMA can vary depending on the lab that performs the test. Your doctor will interpret your results based on the specific ranges used by their lab and your overall health.

Clinical Reference

Quest: 861
LabCorp: 322000
CPT: 84460
ICD-10: K74.60, K70.30, K75.9, B18.2, R74.01, Z79.899

Included in CMP panel; Medicare covers for liver disease evaluation

Educational purposes only — This information is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your lab results with your healthcare provider.