A methylmalonic acid test is used to determine if you have a vitamin B-12 deficiency. Learn about the types of tests, what to expect, and more.

Since vitamin B 12 plays an instrumental role in breaking down homocysteine and methylmalonic acid, might this be the basis for the link between B 12 deficiency and MS? —Joseph H. Villalon, MD ...

Objective: The aim of this study was to investigate homocysteine and methylmalonic acid levels as markers of functional cobalamin and folate status in pregnant Nepali women. Design: Cross ...

In a study of adults aged 20 and over, researchers at Tufts University showed that homocysteine and methylmalonic acid are at much higher levels in individuals who have a combination of vitamin B ...

In a study of adults aged 20 and over, researchers at Tufts University showed that homocysteine and methylmalonic acid are at much higher levels in individuals who have a combination of vitamin B ...

Methylmalonic aciduria and homocystinuria is a rare inherited disorder resulting from impaired conversion of dietary vitamin B12 to its metabolically active forms, and has been associated with ...