How can a thyroid function test help monitor thyroid medication?

A thyroid function test (TFT) is critical for monitoring the effectiveness of thyroid medication. For patients with hypothyroidism, the test helps track how well levothyroxine or other thyroid hormone replacements are working by measuring TSH, T3, and T4 levels. If your TSH level remains high, your medication dosage may need adjustment. In cases of hyperthyroidism, TFTs help monitor the effectiveness of anti-thyroid medications by ensuring hormone levels are kept within the normal range. Regular testing ensures that medication is properly balanced to prevent symptoms of over- or under-treatment.