A free T4 test, also known as an FT4 test, measures the level of unbound (free) thyroxine in the bloodstream. Thyroxine is a hormone produced by the thyroid gland that plays a crucial role in regulating metabolism. The free T4 test is often used to evaluate thyroid function and diagnose conditions such as hypothyroidism or hyperthyroidism.
During the test, a blood sample is taken and analyzed to measure the level of free T4 in the blood. The results can help healthcare providers determine if the thyroid gland is functioning properly or if there is an imbalance of thyroid hormones.
Abnormal levels of free T4 can indicate thyroid disorders, so it is important to consult with a healthcare provider if you are experiencing symptoms such as weight changes, fatigue, or mood swings. Treatment for thyroid disorders may include medication, lifestyle changes, or other interventions to help regulate hormone levels and manage symptoms.
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