# \#testing

**URL:** https://forum.fudiabetes.org/tag/testing/228.md

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## [Elevated / High Vitamin B12 levels?](https://forum.fudiabetes.org/t/elevated-high-vitamin-b12-levels/11791)

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**Author:** [@amusesbouche](https://forum.fudiabetes.org/u/amusesbouche)\
**Replies:** 2\
**Last updated:** [October 7, 2021, 4:01am UTC](https://forum.fudiabetes.org/t/elevated-high-vitamin-b12-levels/11791 "2021-10-07T04:01:57Z")

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Just ran a bunch of labs and found I have an elevated level of vitamin B12. Have heard that metformin (which I am on, the ER version) can affect levels and lead to a deficiency, but have already read briefly on the inter…