Aim: To determine the frequency of non malignant hematological causes of pancytopenia. Bone marrow examination of 148 cases of suspected hematological disorders was carried out in a DHQ KDA Hospital, Kohat from Jan. 2011to Dec. 2013. Results: Among the non malignant hematological disorders, megaloblastic anemia was the most common disorder i.e., (18.2%) followed by aplastic anemia (8.8%), ITP (...