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There are three main ways: Methylmalonic acid (MMA) MMA is one of the most useful markers for detecting B12 deficiency, because B12 helps convert methylmalonyl-CoAone of the forms of MMAinto succinyl-CoA
The calculator above converts your draw volume into these units automatically so you can measure without doing the math by hand
For many individuals, oral B12 supplements are ineffective due to such underlying conditions as: Pernicious anemia : People with this condition lack intrinsic factor, a protein required for B12 absorption in the small intestine
This is because they cause less tissue trauma and pain during insertion
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