Funkce štítné žlázy — Thyroid Panel

Three-marker thyroid function assessment (TSH, free T3, free T4) at SYNLAB Brno. Evaluates the full pituitary-thyroid axis to screen for hypothyroidism and hyperthyroidism. At 379 CZK (~15 EUR), roughly a third of equivalent testing in Austria or Germany — with Brno just 1.5 hours from Vienna.

This thyroid panel measures the three core markers needed for a complete functional assessment of the hypothalamic-pituitary-thyroid axis. TSH (thyroid-stimulating hormone), secreted by the anterior pituitary, is the single most sensitive indicator of thyroid dysfunction. An elevated TSH with normal free hormones defines subclinical hypothyroidism — a condition found in 4-10% of the adult population and significantly more common in women. Free T3 (triiodothyronine) and free T4 (thyroxine) measure the biologically active, protein-unbound fractions of circulating thyroid hormones. The thyroid gland predominantly secretes T4, which acts as a prohormone converted to the more metabolically potent T3 by peripheral deiodinase enzymes. Measuring both free hormones allows clinicians to distinguish between patterns of thyroid dysfunction: isolated T3 thyrotoxicosis — elevated T3 with normal T4 — occurs in roughly 5% of hyperthyroid cases, particularly in early Graves disease and toxic nodular goitre. Autoimmune thyroid disease is the most common cause of both hypothyroidism (Hashimoto thyroiditis) and hyperthyroidism (Graves disease) in iodine-sufficient populations. The female-to-male prevalence ratio is approximately 5-8:1, making thyroid screening especially relevant for women presenting with non-specific complaints such as fatigue, unexplained weight changes, cold intolerance, dry skin, or mood disturbance. The Moravia region historically experienced mild iodine deficiency before the introduction of universal salt iodisation in Czechoslovakia. While dietary iodine status has normalised, autoimmune thyroid disease remains prevalent and is independent of iodine intake. Patients with positive screening results or a family history of thyroid disease can order additional autoimmune markers (anti-TPO, anti-TG) as individual tests through the SYNLAB e-shop. For visitors from Austria, where an equivalent TSH + fT3 + fT4 panel costs 40-60 EUR at a private laboratory, the 379 CZK (~15 EUR) Brno price represents a saving of 60-75%. The Titanium collection point is a short walk from Brno main station, making same-day round trips from Vienna entirely feasible.