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

Slide 070 [100X]

This slide was from a 61 year-old female with myelofibrosis. The patient had 106 nucleated red blood cells per 100 white cell differential. Since the nucleus is present in this cell, it is a nucleated red blood cell. A polychromatophilic erythrocyte has extruded its nucleus but shows the bluish-gray hue due to the residual RNA. When stained with supravital stain, it appears as a reticulocyte.

NUMBER OF RESPONSES	% OF LABORATORIES	CELL CODE AND TYPE
461	97.5%	Code:36 Nucleated red cell
5	1.1%	Code: 47 Erythrocyte - polychromatophilic
2	0.2%	Code: 41 Sickle cell (drepanocyte)
1	0.2%	Code: 34 Elliptocyte
1	0.2%	Code: 15 Plasma cell
1	0.2%	Code: 01 Blast cell, not classified
1	0.2%	Code: 44 Target cell (codocyte)
1	0.2%	Code: 70 (Invalid code)

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