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Licensed Unlicensed Requires Authentication Published by De Gruyter October 19, 2020

Diagnosis of vitamin B12 deficiency: combined indicator of B12-status should be interpreted with caution in the case of renal impairment

  • Geoffrey Urbanski ORCID logo EMAIL logo , Floris Chabrun , Alaa Ghali and Valentin Lacombe

Corresponding author: Geoffrey Urbanski, MD, MSc, Department of Internal Medicine, University Hospital, 4 rue Larrey, 49000 Angers, France, Phone: +33 2 41 35 40 03, Fax: +33 2 41 35 49 69, E-mail:

  1. Research funding: None declared.

  2. Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: Authors state no conflict of interest.

  4. Informed consent: Informed consent was obtained from all individuals included in this study.

  5. Ethical approval: This Research is in accordance with the tenets of the Helsinki Declaration (as revised in 2013), and has been approved by the Bioethical Committee of Angers University Hospital (n° 2015-15).


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Received: 2020-08-14
Accepted: 2020-10-08
Published Online: 2020-10-19
Published in Print: 2021-03-26

© 2020 Walter de Gruyter GmbH, Berlin/Boston

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