Schilddrüsen-Check — Thyroid Screen

Thyroid function screening with TSH — the primary gatekeeper test for thyroid disorders. At €14.57 (plus blood draw), an affordable first-line screen. Normal TSH effectively rules out most thyroid dysfunction; abnormal TSH triggers follow-up with free T3/T4.

TSH (thyroid-stimulating hormone) is the most sensitive single marker for thyroid dysfunction. Produced by the pituitary gland, TSH rises when thyroid hormone output drops (hypothyroidism) and falls when thyroid hormone is excessive (hyperthyroidism). This inverse relationship makes TSH the optimal screening test — changes in TSH typically precede measurable changes in free T4 by months to years. The reference range for TSH is approximately 0.4–4.0 mIU/L, though the optimal range for most adults is 0.5–2.5 mIU/L. Values in the upper-normal range (2.5–4.0) may warrant monitoring, particularly in the presence of thyroid antibodies or symptoms. Hypothyroidism (elevated TSH) affects 4–5% of the European population and presents with fatigue, weight gain, cold intolerance, constipation, dry skin, and cognitive slowing. Subclinical hypothyroidism (TSH 4–10, normal free T4) is even more common and may benefit from treatment in certain age groups. Hyperthyroidism (suppressed TSH) is less common but more acutely dangerous, causing tachycardia, weight loss, anxiety, tremor, and heat intolerance. Graves disease is the most common cause. At €14.57 plus blood draw, this is a practical annual screen. If TSH is abnormal, Mein Labor Leipzig offers extended thyroid profiles including free T3, free T4, and thyroid antibodies.