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[Rinsho Byori 51 : 740～744, 2003]
Evaluation of a New Method for Diagnosing the Origin of Urinary Bleeding In this study, we attempted to develop a new method for diagnosing the origin of urinary bleeding by the morphological characteristics of urinary red blood cells(RBC). Seventy-five samples were divided into five types by individual features using phase-contrast microscopy. It was revealed that the ratios of type III, namely acanthocytes, and IV, namely donut-shaped RBC, were significantly higher in patients with glomerular bleeding than those with non-glomerular bleeding. Acanthocytes seemed to be specific to glomerular bleeding, but some urinary samples from patients with glomerular bleeding did not show acanthocytes. Therefore, we suggest that the detection of a combination of acanthocytes and donut-shaped RBC in a urine sample is useful for the diagnosis of glomerular bleeding. *1Division of Clinical Laboratory, Yamagata University School of Medicine, Yamagata 990-9585 |