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Thyroxine (T4)

Overview of Thyroxine (T4) Hormone

Thyroxine (T4) is the primary hormone secreted by the thyroid gland and plays a vital role in regulating the body's metabolic processes. It functions as a key component in the hypothalamus–pituitary–thyroid (HPT) axis, which controls various hormonal activities related to growth, energy, and metabolism.

Role of T4 in Metabolic Regulation

T4 acts as an anabolic hormone, meaning it helps to build and maintain bodily tissues by influencing how the body uses energy. Adequate levels of thyroxine are essential for maintaining healthy metabolism, weight balance, and energy levels in both men and women.

Diagnostic Use of T4 Testing

Measuring thyroxine (T4) levels in the blood is a crucial diagnostic tool for evaluating thyroid function. It is commonly used in the following clinical scenarios:

Detection of Hyperthyroidism: Elevated T4 levels may indicate an overactive thyroid gland.

Detection of Hypothyroidism: Low T4 levels can signal either primary (thyroid-related) or secondary (pituitary-related) hypothyroidism.

Monitoring TSH-Suppression Therapy: Patients undergoing treatment for thyroid disorders often require regular T4 monitoring to ensure proper hormone balance.

Private Thyroid Blood Tests in Slough

If you're experiencing symptoms of thyroid imbalance such as fatigue, weight changes, or mood fluctuations, private T4 thyroid blood tests are available at our Slough clinic and surrounding areas including Langley, Windsor, Maidenhead, and Burnham. Early detection through T4 testing can help manage thyroid disorders more effectively and improve overall health outcomes.

There is an additional £25 phlebotomy fee for every donation.