Bone marrow iron stain
Normal Iron deficiency anemia
Macrocytic Anaemia
BM
Megaloblastic Non Megaloblastic
Vit B12
Folate
Vit .B12 Def.No Def Folate def
Schlling tests with IF
Corrected
Pernicious Anaemia
Gastric resection
Not corrected
Defective ileal
absorption
Inherited disorder of
DNA Synthesis Poor diet
Increased need
malabsoption
Hypothyroidism
Alcoholism
Liver diseases
Megaloblastic Maturation
Maturation of RBC
Aplastic Anaemia
Idiopathic
Secondary
Drug induced
Radiation etc