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Thyroid Function Tests: A Complete Guide to TSH, T3, and T4 Levels

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  Thyroid Function Tests: A Complete Guide to TSH, T3, and T4 Levels Your thyroid gland - a small, butterfly-shaped organ at the base of your neck - serves as your body's metabolic control center. By producing thyroid hormones, it regulates crucial functions including: ·        Energy levels and metabolism ·        Body temperature ·        Heart rate ·        Brain development ·        Muscle strength ·        Weight management ·        Mood regulation When this delicate system malfunctions, it can lead to either  hypothyroidism (underactive thyroid)  or  hyperthyroidism (overactive thyroid) . Thyroid function tests (TSH, T3, T4) provide critical insights to diagnose these conditions affecting  1 in 10 Americans  according to the Am...