Which labs should be tested annually for patients with hypothyroidism?

For patients with hypothyroidism, testing T3 (triiodothyronine) and T4 (thyroxine) levels annually is essential in monitoring their thyroid hormone replacement therapy. These hormones are primarily responsible for regulating metabolism and energy levels in the body. Maintaining appropriate levels of T3 and T4 is crucial for patients receiving treatment for hypothyroidism, as they guide healthcare providers in adjusting doses of thyroid medications if necessary.

Annual testing of T3 and T4 allows healthcare providers not only to confirm that the patient is receiving the correct dosage but also to ensure that the hypothyroidism is adequately controlled. This is particularly important because fluctuations in thyroid hormone levels can lead to symptoms of either over-treatment or under-treatment, affecting the patient’s overall health and quality of life.