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Corpus Christi, TX
A 28-year-old female asked:

What can cause extremely high vitamin b12 levels? my result was >2,000... i thought diet and/or supplements wouldn't cause high levels.

2 doctor answers4 doctors weighed in
Dr. Rex Mahnensmith
A Verified Doctoranswered
46 years experience
High b12: This is not uncommon in my experience. It means your intake has been sufficient. Be thankful. There is no toxicity.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Roy Arnold
Internal Medicine 49 years experience
Needs Evaluation: Elevated levels of B12 are non-specific but can be associated with bone marrow diseases like polycythemia. Best to be evaluated by a hematologist. Thanks for trusting HealthTap!
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Mar 21, 2019

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