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A 17-year-old male asked:

Is 420.8 pg/ml of vitamin b12 low in blood ? does this need a supplement ?

1 doctor answer1 doctor weighed in
Dr. Donald Colantino
Internal Medicine 62 years experience
Normal: Normal ranges of vitb12 =200-600pg/ml. . Therefore you don't need to supplement it. However, taking extra B12 does no harm as the body excretes what is not needed.
Last updated Oct 26, 2016


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