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Classification: Severe anemia
Hemoglobin 7.5 is severe anemia — urgent evaluation. In CKD this reflects advanced EPO deficiency plus often iron deficiency, and transfusion is commonly needed for symptoms.
Hemoglobin carries oxygen. The kidneys produce erythropoietin (EPO) which drives red blood cell production — CKD causes anemia as EPO production falls.
Complete blood count (CBC).
Reference: KDOQI anemia guidelines; WHO anemia definitions • Normal range: 13.5-17.5 (men), 12.0-15.5 (women)