← Return to High Levels of Vitamin B12 and Ferritin: Any pointers?

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@kathl

Per MayoClinicLabs
Vitamin B12 Assay, Serum
Many other conditions are known to cause an increase in the serum vitamin B12 concentration and should be considered in the interpretation of the assay results, including:
Increased serum vitamin B12
Ingestion of vitamin C
Ingestion of estrogens
Ingestion of vitamin A
Hepatocellular injury
Myeloproliferative disorder
Uremia

Per UCSFHealth
Vitamin B12 level
An increased vitamin B12 level is uncommon. Usually, excess vitamin B12 is removed in the urine.
Conditions that can increase B12 level include:

Liver disease (such as cirrhosis or hepatitis)
Myeloproliferative disorders (for example, polycythemia vera and chronic myelogenous leukemia)

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Replies to "Per MayoClinicLabs Vitamin B12 Assay, Serum Many other conditions are known to cause an increase in..."

Welcome @kathl, I noticed that you wished to post a URL to the helpful info from Mayo Clinic Labs with your post. You will be able to add URLs to your posts in a few days. There is a brief period where new members can't post links. We do this to deter spammers and keep the community safe. Clearly the link you wanted to post is not spam. Please allow me to post it for you.

- Vitamin B12 Assay, Serum https://www.mayocliniclabs.com/test-catalog/Overview/9154#Clinical-and-Interpretive

Do you have experience with abnormal vitamin B12 levels?