Haemoglobin Too few cells 1)Reduced production haematinic/nutritonal deficiency alcohol, drugs, toxins liver (TPO), renal (EPO) bone marrow problem 2)Increased destruction/loss Blood loss - anaemia sepsis, viruses immune-mediated - autoimmune, drug-related hypersplenism fragmentation syndromes Microcytic anaemia MCV Serum iron serum Ferritin Transferrin saturation Iron deficiency anaemia low low..