What is normal blood hb?

Normal blood hemoglobin (Hb) levels vary by age and sex. Typically, for adult men, normal levels range from about 13.8 to 17.2 grams per deciliter (g/dL), while for adult women, normal levels range from approximately 12.1 to 15.1 g/dL. Children and infants have different reference ranges that can vary significantly. It's important to consult a healthcare professional for specific evaluations and interpretations.