Thyroxine (T4) Free is one of the main thyroid hormones and is important for regulating metabolism. High or low levels of T4 Free can indicate thyroid dysfunction.
Thyroid hormones regulate fatty acid oxidation. Carnitine is essential for fatty acid transport and metabolism, linking it indirectly to T4 status.
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Tyrosine is a precursor for the synthesis of thyroid hormones including thyroxine (T4). Alterations in tyrosine levels can directly impact T4 production.
