Sir, My (Male, 65 years) Hemoglobin level has been fluctuating between 7-8 g/dl for the last 3 years. I am also a Diabetic, suffering from hypertension, dilated cardiomyopathy EF-40% and chronic kidney diseases. After my occult blood test negative, i am advised to undergo Bone marrow test. please advise if the procedure is necessary? Thanks in advance! N.B. Singh