Verywell Health on MSN1y
What Is T4? Thyroxine Test and What It MeansEun Lee, MD If your healthcare provider has ordered a T4 test, you may wonder what it is. Thyroxine is another name for T4, ...
Usually, it is symptomless and may not need treatment. T4 (thyroxine) is a major hormone secreted by your thyroid gland. T3 (triiodothyronine) is the active version of T4. The amount of T4 ...
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