methylmalonic acid

noun
meth·​yl·​ma·​lon·​ic acid | \ ˌmeth-əl-mə-ˌlän-ik- How to pronounce methylmalonic acid (audio) \

Medical Definition of methylmalonic acid

: a structural isomer of succinic acid present in minute amounts in healthy human urine but excreted in large quantities in the urine of individuals with a vitamin B12 deficiency

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