welche blutwerte bei müdigkeit — what symptoms are typical?

When evaluating fatigue, common blood tests include: complete blood count (CBC) to check for anemia, ferritin (iron stores), vitamin B12, folate, vitamin D, thyroid panel (TSH), inflammatory markers (CRP, ESR), and liver/kidney function. Typical symptoms of fatigue are persistent tiredness, lack of energy, difficulty concentrating, increased need for sleep, and daytime sleepiness. Note: The genetic variants mentioned in the context (e.g., BMAL1, CLOCK) are not clinically established as standalone causes of fatigue. A DNA test does not replace medical workup. Evidence for blood tests in fatigue is strong (clinical practice), while genetic testing for fatigue lacks validated clinical utility.