How to prepare for Cortisol Senioren

Preparation for a cortisol test in seniors depends on the test type (saliva, blood, urine). Cortisol follows a strong circadian rhythm; samples are typically taken in the morning and evening. For saliva tests: avoid eating, drinking, or brushing teeth 30 minutes prior. For blood draws: come fasting, avoid caffeine and stress. Important: a single cortisol reading has limited value; repeated measurements or a daily profile are more informative. Evidence for home cortisol tests in seniors is weak – many lack clinical validation. Medications (e.g., corticosteroids, antidepressants) can interfere. Always consult a doctor before testing. Consumer tests like MyBody-X provide a snapshot, not a diagnosis. Marketing often overstates benefits. Evidence: marketing/unclear.