Understanding TSH, T3, and T4 levels is essential for evaluating thyroid function and diagnosing thyroid disorders. Here’s how each component plays a role:
- TSH (Thyroid-Stimulating Hormone):
- TSH is produced by the pituitary gland and stimulates the thyroid to release T3 and T4.
- High TSH levels suggest hypothyroidism, where the thyroid is underactive.
- Low TSH levels often indicate hyperthyroidism, meaning the thyroid is overactive.
- T3 (Triiodothyronine):
- T3 is one of the main thyroid hormones responsible for regulating metabolism, heart rate, and digestion.
- High T3 levels are commonly seen in hyperthyroidism, causing symptoms like rapid heart rate, weight loss, and anxiety.
- Low T3 levels can be linked to hypothyroidism, leading to fatigue, weight gain, and sluggishness.
- T4 (Thyroxine):
- T4 is the most abundant thyroid hormone, which is converted into the active form, T3, in the body.
- Elevated T4 levels may signal hyperthyroidism, while low levels can indicate hypothyroidism.
- Monitoring T4 is crucial for detecting imbalances that affect metabolism, energy levels, and overall health.
Together, these tests give a complete picture of thyroid health, helping doctors identify issues like Hashimoto’s thyroiditis, Graves' disease, and other thyroid-related conditions.
Recommended Tests
- Total Triiodothyronine (T3)
- Measures T3 levels to assess thyroid function and detect hyperthyroidism or hypothyroidism.
Total Triiodothyronine (T3) Test
- Measures T3 levels to assess thyroid function and detect hyperthyroidism or hypothyroidism.
- Thyroid-Stimulating Hormone (TSH)
- Evaluates TSH levels to help diagnose thyroid disorders and monitor treatment for thyroid disease.
Thyroid-Stimulating Hormone (TSH) Test
- Evaluates TSH levels to help diagnose thyroid disorders and monitor treatment for thyroid disease.
