was ist ein guter hb wert — when to see a doctor?

A good hemoglobin (Hb) value for adult men is 13.5–17.5 g/dL, for adult women 12.0–15.5 g/dL (reference ranges vary slightly by lab). Children and pregnant women have different targets. See a doctor if Hb is persistently below 12 g/dL (women) or 13 g/dL (men) – this suggests anemia – or above 17.5 g/dL (men) or 16 g/dL (women), which may indicate polycythemia. Symptoms like fatigue, pallor, shortness of breath, dizziness, or palpitations also warrant medical evaluation. A single borderline result is often harmless, but repeated abnormalities or accompanying symptoms require diagnostic workup. Causes range from iron deficiency and chronic disease to genetic blood disorders. Without a complete blood count and clinical assessment, no reliable conclusion can be drawn. The values given are based on clinical guidelines; individual factors such as age, sex, altitude, or smoking affect the target range.