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Thyroid Function
Thyroid Function
Thyroglobulin (Tg) is a storage form of the thyroid hormones produced by follicular cells of the thyroid, and is released into serum in conjunction with T3 and T4.
Thyroid Function
Thyroglobulin
Overview
- Thyroglobulin (Tg) is a storage form of the thyroid hormones produced by follicular cells of the thyroid, and is released into serum in conjunction with T3 and T4.
- Thyroglobulin (Tg) is not routinely measured in clinical practice.
Clinical Use of Thyroglobulin Testing
- Diagnosis of thyrotoxicosis factitia - used to distinguish surreptitious thyroxine ingestion from other causes of hyperthyroidism, as thyroglobulin will remain normal with exogenous thyroxine use
- Thyroid cancer - assessing for residual tumour post resection, or monitoring for recurrence
Last updated on October 17th, 2018
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