What should I know about cortisolspiegel messen?

The provided contexts do not contain specific information about cortisol level measurement. In general, cortisol is measured in blood, saliva, or urine to assess adrenal function (e.g., Cushing's syndrome or Addison's disease). Levels show strong diurnal variation (highest in the morning) and are influenced by stress, sleep, medications (e.g., corticosteroids), and illnesses. Self-testing without medical indication is not recommended because interpretation is complex and false positives/negatives are common. If an adrenal disorder is suspected, an endocrinologist should be consulted.