Pakiet Tarczyca — Thyroid Panel

Core thyroid function panel measuring TSH, free T3, and free T4. Screens for both hypothyroidism and hyperthyroidism by assessing pituitary signalling and circulating active hormone levels. At 80 PLN (~18.50 EUR) plus collection fee, this covers the essential thyroid markers at a price well below German equivalents.

This three-marker thyroid panel provides a complete functional assessment of the hypothalamic-pituitary-thyroid axis. TSH (thyroid-stimulating hormone) is secreted by the anterior pituitary and is the most sensitive single marker for thyroid dysfunction. Elevated TSH indicates primary hypothyroidism — the thyroid gland is underperforming and the pituitary is compensating by producing more stimulation. Suppressed TSH indicates hyperthyroidism — excess thyroid hormone feeds back to shut down pituitary TSH production. Free T3 (triiodothyronine) and free T4 (thyroxine) measure the biologically active, unbound fractions of circulating thyroid hormones. T4 is the predominant secretory product of the thyroid gland and serves as a prohormone, converted to the more metabolically active T3 in peripheral tissues. Measuring both free hormones distinguishes between different patterns of thyroid dysfunction — for example, isolated T3 thyrotoxicosis (elevated T3 with normal T4) is common in early Graves disease and toxic nodular goitre. Subclinical thyroid disease (abnormal TSH with normal free hormones) is found in 4-10% of the general population and is more prevalent in women and older adults. Symptoms are often subtle — fatigue, weight changes, cold intolerance, dry skin, constipation for hypothyroidism; anxiety, tremor, heat intolerance, palpitations for hyperthyroidism. For patients with a family history of autoimmune thyroid disease or those with borderline results, InterLab offers the extended thyroid panel (Pakiet Tarczyca Rozszerzony) at 170 PLN, which adds anti-TPO and anti-TG antibodies for autoimmune screening.