Methylmalonic acid is a substance produced when proteins (called amino acids) in the body break down.
A test can be done to measure the amount of methylmalonic acid in your blood.
A blood sample is needed.
No special preparation is necessary.
When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. There may be some throbbing or slight bruising. These soon go away.
This test may also be done with other tests to check for a vitamin B12 deficiency.
Normal values are 0.08 to 0.56 micromoles per liter.
Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your doctor about the meaning of your specific test results.
A higher than normal value may be due to vitamin B12 deficiency or methylmalonic acidemia.
Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:
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Updated by: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.
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