welche blutwerte bei müdigkeit und erschöpfung — which blood markers matter?

For fatigue and exhaustion, well-established blood markers include ferritin (iron storage), vitamin B12, vitamin D, TSH (thyroid function), and a complete blood count (hemoglobin, red blood cells). Inflammatory markers (CRP) and fasting glucose can also be relevant. The evidence for these markers is strong (human-strong), as they are recommended in numerous clinical guidelines and studies for fatigue workup. Importantly, deficiencies in B12 or iron can cause symptoms even without anemia. The provided context lacks specific blood marker data, so this answer relies on general medical standards. Caveat: self-testing without medical interpretation can be misleading. Persistent fatigue warrants a doctor's visit to rule out underlying conditions like hypothyroidism or chronic inflammation. The MyBody-X DNA tests mentioned in the context are not designed to measure blood markers and are not appropriate for this question.