How to prepare for TSH Senioren

Preparing for a TSH (thyroid-stimulating hormone) test in seniors follows standard medical guidelines, but age-related factors matter. TSH should be measured in the morning, ideally fasting, because levels follow a circadian rhythm (peak in early morning). Medications such as levothyroxine, beta-blockers, glucocorticoids, or dopamine agonists can alter TSH; discuss timing with your physician. High-dose biotin (common in hair/skin supplements) can falsely lower TSH; stopping biotin 2–3 days before the blood draw is recommended. In seniors, subclinical thyroid dysfunction is more prevalent, and TSH reference ranges shift with age – a mildly elevated TSH may be normal. A single TSH value is not diagnostic; free T3, free T4, and antibodies may be needed. This is a biomarker test, not a genetic test. Evidence level: practice (based on clinical guidelines and routine lab protocols). Always consult a doctor for interpretation and personalized advice.