When T3 (triiodothyronine) and T4 (thyroxine) levels are high in a Thyroid Function Test (TFT), it often signals hyperthyroidism, a condition where the thyroid gland produces too much hormone. Here’s what this can mean for your health:
- Overactive Thyroid (Hyperthyroidism):
- High T3 and T4 levels speed up the body's metabolism, leading to symptoms such as:
- Rapid heartbeat or palpitations
- Weight loss despite normal or increased appetite
- Nervousness, irritability, or anxiety
- Sweating and heat intolerance
- Tremors in the hands
- The most common cause of hyperthyroidism is Graves' disease, an autoimmune disorder that stimulates thyroid hormone production.
- High T3 and T4 levels speed up the body's metabolism, leading to symptoms such as:
- Other causes of high T3 and T4 levels:
- Thyroid nodules: Growths within the thyroid can produce excess hormone.
- Excessive iodine intake from diet or supplements.
- Thyroiditis: Inflammation of the thyroid, which can cause hormone release into the bloodstream.
- Treatment Options:
- Antithyroid medications (e.g., methimazole) to reduce hormone production.
- Radioactive iodine therapy to shrink or destroy overactive thyroid cells.
- Surgery (thyroidectomy) in cases where other treatments are ineffective.
Monitoring high T3 and T4 levels is crucial, as untreated hyperthyroidism can lead to complications such as heart disease or osteoporosis. Early detection and appropriate treatment are key to maintaining thyroid health.
Recommended Tests:
- Total Triiodothyronine (T3) Test
This test specifically measures the T3 hormone level, crucial for assessing thyroid function in hyperthyroidism cases.
Total T3 Test - Total Thyroxine (T4) Test
Measures the T4 hormone level, another essential component of thyroid function analysis.
Total T4 Test
