Rare diseases · Sign or symptom

Abnormal circulating ornithine concentration

HP:0012025

What it means

Deviation from the normal concentration of ornithine in the blood circulation.

Ornithine is an amino acid produced in the urea cycle by the splitting off of urea from arginine. Ornithine is a naturally occurring, non-proteinogenic amino acid found in meat, fish, dairy and eggs.

Part of the broader category

Abnormal circulating ornithine…

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This 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.