Hematuria: Laboratory Investigations
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One of the most important questions in urine diagnosis is whether increased erythrocytes are excreted in urine.
Numerous disorders can cause hematuria. It is of enormous diagnostic importance to confirm hematuria indicated on a urine test strip by means of microscopic analysis of urine sediment—and at the same time to differentiate between renal and post-renal hematuria on the basis of erythrocyte morphology.
Unfortunately, difficulties are frequently encountered during microscopic analysis: there are often discrepancies between the evaluation of the urine test strip and the microscopic analysis of urine sediment. These problems are presented and explained in an extensive tabular overview and guidance for troubleshooting is provided.