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Free T4 (Free Thyroxine)
Free T4 Test Overview
T4 (thyroxine) circulates throughout the body while being attached to thyroxine-binding globulin and albumin. The active form of T4 is less than 0.3% of the total T4 and is known as free fraction (FT4). The free T4 test, which measures levels of free T4, provides a more accurate reflection of thyroid gland function when combined with TSH. Thyroid hormones play a vital role in both growth and metabolism. The signs of hyperthyroidism include weight loss, fast heartbeat, shaking, sweating, nervousness, heightened heat sensitivity, and more.
Patients with hypothyroidism experience symptoms like weight gain, fatigue, slow heart rate, increased sensitivity to cold, depression, and dry, thinning hair.
A T4-Free Thyroxine Serum Test, also known as a thyroxine test, is utilized for identifying thyroid disorders. The thyroid gland produces hormones that regulate how our body uses energy. Our thyroid is a small gland that is shaped like a butterfly. It can be found at the bottom of our neck. The weight, muscle strength, body temperature, heart health, and mood are all impacted by the thyroid hormone. A thyroid disorder can impact the growth of children as well.
Two distinct tests are used to measure T4 levels
- A T4 level test that is free is utilized to directly assess the levels of T4 in the bloodstream. According to medical professionals, this test offers more precise data than the total T4 test.
- The overall T4 test measures the combined amount of free and bound T4. This technique is viewed as less precise for evaluating the functionality of our thyroid gland.
Frequently Asked Questions
The T4-Free (Free Thyroxine) serum test evaluates thyroid function, aiding in diagnosing hyperthyroidism or hypothyroidism. It's conducted to monitor thyroid disorders, assess symptoms like weight changes and fatigue, and ensure proper treatment.
The T4-Free (Free Thyroxine) serum test measures the concentration of unbound or free Thyroxine (T4) in the bloodstream. This helps assess thyroid function and diagnose conditions such as hyperthyroidism and hypothyroidism.
During a T4-Free (Free Thyroxine) serum test, a blood sample is drawn from a vein in your arm. Minimal discomfort may be felt during the blood draw. Afterward, you can resume normal activities. Results typically come back within a few days.
If T4-Free Thyroxine serum results are present, they indicate the concentration of unbound T4 in the bloodstream, aiding in diagnosing thyroid disorders. If absent, it suggests insufficient data, necessitating further investigation or testing for thyroid function evaluation.
Typically, no special preparation is required for a T4-Free Thyroxine test. However, follow any specific instructions from your healthcare provider, which may include adjusting medications or fasting before the test.
Why OrbitoAsia Diagnostics?
Orbito Asia Labs and Scans is a comprehensive healthcare imaging and diagnostic facility under one roof. It prides itself on providing the most advanced infrastructure, the best possible medical facilities, the most competitive prices, and thorough individualised attention so that the customer can have diagnostic tests performed in the most efficient and cost-effective manner at a single location by our experienced and certified physicians and friendly staff.
