A 60 yr old female with a history of 8 blood transfusions in 2yrs. Her Hb-60g/L, TLC-5800, platelet- 3.4 lakhs, MCV-60, RBC-2.11akhs/mm3. She is having hypochromic microcytic anemia. Which investigation is not needed?
Evaluation for pulmonary hemosiderosis
Urinary hemosiderin
Bone marrow examination
GI endoscopy