welche blutwerte bei erschöpfung — what does this mean exactly?

The question 'welche blutwerte bei erschöpfung' translates to 'which blood values for exhaustion' and asks for the common laboratory tests used to evaluate unexplained fatigue. Standard workup includes complete blood count (hemoglobin, MCV, WBC, platelets) to rule out anemia, ferritin and transferrin saturation for iron deficiency, vitamin B12 and folate, vitamin D, TSH (thyroid function), CRP (inflammation), fasting glucose, and sometimes liver/kidney function. Additional tests like electrolytes, creatine kinase, cortisol rhythm, or oral glucose tolerance test may be considered based on clinical suspicion. However, many fatigue cases show normal labs. Evidence for these tests is moderate: they are guideline-recommended but have limited diagnostic yield in primary care. Fatigue is multifactorial (sleep, stress, mental health, nutrition). No single blood test reliably diagnoses the cause. The phrase itself is a common patient query meaning 'which blood tests for exhaustion' – reflecting a desire for objective markers, but clinical context and history remain paramount.