was sind tsh werte — when to see a doctor?

TSH (thyroid-stimulating hormone) is a key marker for thyroid function. The normal reference range is typically 0.4–4.0 mIU/L, though it varies by laboratory, age, and health status. An isolated TSH outside this range is not a diagnosis but a signal that further evaluation may be needed. You should see a doctor if your TSH is repeatedly outside the reference range or if you have symptoms such as fatigue, unexplained weight changes, palpitations, cold intolerance, depression, or concentration difficulties. TSH should also be checked early in pregnancy or when planning a pregnancy. Important: a single home test result does not replace clinical assessment. A physician (endocrinologist or GP) should interpret TSH together with free thyroid hormones (fT3, fT4) and antibodies. Self-medication with thyroid hormones or iodine is dangerous. Evidence for TSH screening is strong (American Thyroid Association guidelines), but individual thresholds remain a clinical decision. MyBody-X does not offer a TSH test; this answer addresses general laboratory diagnostics.