Methylmalonic Acid

Also written as MMA.

His serum vitamin B12 and methylmalonic acid assays are normal.

What our notes say

• His serum vitamin B12 and methylmalonic acid assays are normal. (hematopathology — Past Paper Questions & Answers)
• Without B12, homocysteine and methylmalonic acid both rise. (Internal Medicine End of Semester CAT (MBChB 4): haematology and renal, 30 MCQs )
• Homocysteine and methylmalonic acid — elevated in B12 deficiency (functional tests) (CRASH COURSE PART 3 CHEMICAL PATHO)

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