3 mL (2 mL min.) Whole blood in 1 Lavender Top (EDTA) tube AND 3 mL (2 mL min.) Whole blood in 1 Green Top (Sodium Heparin) tube OR 2 mL (1 mL min.) Bone marrow in 1 Green Top (Sodium heparin) tube. Ship immediately at 18â€“22Â°C. DO NOT REFRIGERATE OR FREEZE. Specify time, date and clinical details on test request form.
Sample Daily by 9 am; Report Same day
CD64 is expressed by monocytes ; intermediate neutrophil precursors. It is mainly used to differentiate Acute promyelocytic leukemia (APL) from other Acute myeloid leukemias (AMLs). APL is an aggressive disease and early diagnosis ; treatment can significantly reduce overall mortality rate.