Laboratory Diagnosis of Myeloperoxidase Deficiency: A Case Report.

Myeloperoxidase deficiency is a common disorder featuring deficiency, either in quantity orfunction of myeloperoxidase. the patients are misdiagnosed because majority of individualswith myeloperoxidase deficiency show no signs of immunodeficiency. myeloperoxidase deficiencyis noted even before the diagnosis is suspected because the machines that performautomated leukocyte differential counts rely upon neutrophil myeloperoxidase activity toenumerate these cells. this report describes two cases of myeloperoxidase deficiency thatwere diagnosed after reassess of the hemograms.in one case ,we got to the diagnosis afterthe patient went under bone marrow aspiration for ruling out leukemia.