Abstract
We have carried out blood coagulation studies of various hematological disorders encountered routinely, in which hemorrhagic diathesis is the cardinal symptom and also it has important influence upon the prognosis of the diseases. Those which we studied are mainly acute leukemia, idiopathic thrombocytopenic purpura (ITP) and aplastic anemia, and hemophilia, iron deficiency anemia and purpura simplex are also studied in parallel to the said three diseases.