in this episode of the Endocrine Echo Lounge, Doctor Henry explains how thyroid testing is used to evaluate thyroid function and uncover the cause of thyroid disease.

We take a practical look at TSH, free T4, and T3, including why T3 can be especially helpful when evaluating hyperthyroidism and T3 thyrotoxicosis. We also discuss TPO antibodies, thyroglobulin antibodies, and TRAb, including the important distinction between stimulating, blocking, and neutral TSH-receptor antibodies and when a specific test such as TSI may be appropriate.

The episode also explains why reverse T3 is generally not useful in routine thyroid evaluation and discusses factors that can interfere with thyroid blood tests, including biotin, medications, changes in thyroid-binding proteins, and laboratory assay interference.

Most importantly, we discuss why thyroid tests should not be interpreted as isolated numbers. The results need to be considered together with the patient's symptoms, medications, supplements, examination, and overall clinical picture.

If you've ever wondered what your thyroid blood tests actually mean, this episode provides a straightforward, endocrinology-based guide to understanding the basics of thyroid testing.

Subscribe to the Endocrine Echo Lounge and share this episode with someone who may benefit from learning more about thyroid health.

Disclaimer: This podcast is for educational and informational purposes only. It is not intended to provide individual medical advice, diagnose or treat any medical condition, or replace consultation with your healthcare professional. The information discussed is not intended to advertise or promote any products.