High TSH levels detected during a Thyroid Function Test (TFT) generally point to hypothyroidism, where the thyroid gland is not producing enough thyroid hormones. The pituitary gland compensates by releasing more TSH in an effort to stimulate thyroid hormone production.
What High TSH Levels Indicate:
- Hypothyroidism: When TSH is elevated, it often reflects low levels of thyroid hormones (T3 and T4). The body increases TSH production to stimulate the thyroid gland.
- Subclinical Hypothyroidism: In some cases, high TSH may occur with normal T3 and T4 levels, indicating early or mild thyroid dysfunction.
- Hashimoto's Thyroiditis: This autoimmune condition is the most common cause of hypothyroidism, where the immune system attacks the thyroid gland, reducing hormone production.
Potential Symptoms of High TSH:
- Fatigue and sluggishness
- Weight gain or difficulty losing weight
- Cold intolerance
- Dry skin and hair
- Depression or memory issues
Causes of High TSH:
- Autoimmune diseases such as Hashimoto's thyroiditis
- Iodine deficiency
- Thyroid surgery or radioactive iodine treatment for hyperthyroidism
- Certain medications, such as lithium
Treatment Options:
- Levothyroxine (synthetic thyroid hormone) is the most common treatment for hypothyroidism, helping to restore normal thyroid hormone levels.
- Monitoring: Regular follow-ups with TSH tests to adjust medication dosage.
Recommended Tests:
- Total Thyroxine (T4) Test
To measure the amount of thyroid hormone (T4) in the blood, crucial for diagnosing hypothyroidism.
Total Thyroxine Test - Anti-Thyroid Peroxidase (ATPO) Antibodies Test
To check for antibodies that may indicate autoimmune thyroid disorders like Hashimoto’s.
Anti-Thyroid Peroxidase Test
