Thyroid Hormone Tests
Blood take service 5.00€
Tests
20.00€
Thyroid blood tests help assess how the thyroid is functioning and whether its activity may be influenced by an autoimmune process. The most common initial test is TSH. If its result is altered or there is a clear medical reason, free thyroxine (FT4), free triiodothyronine (FT3), or other indicators may also be tested.
What is the difference between TSH, FT4, and antibodies?
TSH is produced by the pituitary gland and it regulates the production of thyroid hormones. FT4 and FT3 show the amount of free thyroid hormones in the blood, so their results are evaluated together with TSH, rather than as separate, unrelated numbers.
Anti-TPO, anti-Tg, and antibodies against TSH receptors help assess autoimmune thyroid diseases, such as Hashimoto's thyroiditis or Graves' disease. A positive antibody result does not independently indicate whether the thyroid is currently producing too little or too much hormone.
How to choose tests?
The thyroid is often tested due to unexplained fatigue, weight changes, heart palpitations, intolerance to cold or heat, menstrual changes, during pregnancy, or when monitoring an already diagnosed disease. In addition to the main thyroid indicators, tests for thyroglobulin, calcitonin, and others with a narrower purpose can be performed, which are not a general test of thyroid function.
If you are taking thyroid hormones, coordinate the timing of the test and medication according to the doctor's plan; doses should not be changed based on a self-conducted test alone.