🔬 Free T4 – Understanding Your Thyroid’s Output
Free T4 (Free Thyroxine) is one of the key hormones produced by your thyroid gland. It plays a major role in regulating your metabolism, energy levels, and body temperature. Measuring free (unbound) T4 gives a more accurate picture of active thyroid hormone circulating in your bloodstream.
This test is commonly ordered alongside TSH to help:
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Diagnose thyroid disorders like hypothyroidism and hyperthyroidism
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Monitor ongoing thyroid treatment
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Evaluate symptoms such as fatigue, weight changes, or temperature sensitivity
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