Rare diseases · Sign or symptom

Abnormal circulating free T3 concentration

HP:0032209

What it means

A deviation from the normal concentration of free triiodothyronine (T3) in the blood circulation. A proportion of T3 is bound to plasma proteins in the blood, including mainly thyroxine binding globulin, transthyretin, and albumin. T3 that is not bound to a protein is referred to as free T3.

Part of the broader category

Also called: Abnormal circulating free T3 level · Abnormal circulating free triiodotyronine concentration

Abnormal circulating free T3 concentration

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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.