New York State Department of Health - Wadsworth Center - Cytohematology Proficiency Testing

Slide 075 [100X]

This slide was from a 19-year-old female with acute myelogenous leukemia (AML). The patient had 93% blasts, many showing the presence of Auer rods. "Auer rods are rod-like bodies representing primary granules that stain a reddish purple. They are found in the cytoplasm of myeloblasts, monoblasts, and promyelocytes in acute monocytic or acute myelogenous leukemia ...." Hematology: Principles and Procedures, Brown,6th Edition pg. 82. Since the cell is a myeloblast, code 2 is also an acceptable response.

NUMBER OF RESPONSES	% OF LABORATORIES	CELL CODE AND TYPE
474	99.2%	code: 19 Auer rod
3	0.6%	code: 2 Myeloblast
1	0.2%	code: 18 Hypersegmentation

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