For diagnosis of hematological disorders there are three modalities to examine bone marrow - Bone marrow aspiration cytology (BMA), bone marrow biopsy (BMB) and touch imprint cytology (BMI). BMA gives cytological picture, BMI also gives cytological picture but cells are less in number and BMB gives cytological as well as bone marrow architectural picture. BMA alone may not be sufficient to reach diagnosis therefore the present study was undertaken to compare the above three modalities. This book is a prospective study on 51 cases, done from January 2013 to December 2013, where BMA, BMI and BMB were performed on OPD and IPD patients. Complete clinical data was recorded including physical examination, complete hematological study along with other relevant investigations and proforma filled.