Rare diseases · Sign or symptom
Abnormal circulating T4 concentration
HP:0031505
What it means
A deviation from the normal concentration of thyroxine in the blood. Thyroxine (also known as T4) is the main hormone secreted by the thyroid gland into the blood. It can be converted into the active form triiodothyronine (also known as T3).
Part of the broader category
Also called: Abnormal circulating T4 level · Abnormal circulating thyroxine level
Abnormal circulating T4 concentration
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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.