Rare diseases · Sign or symptom
Reduced circulating vitamin B6 circulating
Reduced vitamin b6 levels
HP:0008326
What it means
An abnormally decreased concentration of vitamin B6 in the blood circulation.
Rare diseases that can present with this1
The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Reduced circulating vitamin B6 level · Vitamin B6 deficiency
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.