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A member asked:
What are common causes of an elevated b12 levels?
A doctor has provided 1 answer
LAB ERROR: A serum level is not an accurate measurement for b12, which the body can store for up to several in the tissues. Local labs can usually only give us relatively accurate nutritional information about vitamin d and iron. A specialty lab must be used to measure sources other than serum, such as lymphocytic wbcs. Regardless, a high B12 in serum most likely indicates recent exposure or supplementation.
Answered 3/10/2015
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