[Determination of the diameter of erythrocytes in the urine in urologic diseases and so-called asymptomatic microhematuria].
In a blind-study with 96 patients analysis of erythrocyte diameters permits to differentiate between renal-parenchymatous and post-renal microhaematuria in 89.9% of the cases. Erythrocytes on renal-parenchymatous microhaematuria are distinctly smaller (Average diameter 3.2 microns-5.6 microns) than those on post-renal microhaematuria (average diameter 5.4 microns-8.8 microns). In addition to the evaluation of erythrocyte morphology erythrocyte morphometry represents further possibility in diagnosis.
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