Test Details: CD41 is expressed by platelets and megakaryocytes; and is a convenient marker for the identification of platelets. Acute megakaryocytic leukemia (AMKL) is a rare subtype of acute myeloid leukemia (AML). CD41 and CD61 monoclonal antibodies are frequently used as diagnostic markers for identification of megakaryocytic precursors in myeloproliferative disorders and myeloid leukemia