[Diagnosis of hematuria from red blood cells in urinary sediment]

Urinalysis is classical noninvasive test for urological disease, kidney disease, infection, bone metabolic disorders, doping tests, and many other diseases. Urinalysis is also important as a screening test to diagnose diseases. Hematuria diagnostic guidelines in Japan were published in 2006. It is described in them that the examination of urinary sediment may indicate hematuria. Urinary red blood cells in urinary sediments are useful to differentiate hematuria of glomerular origin from that of non-glomerular origin. The urinary sediment test is one of the very important tests to investigate the origin of hematuria. Here, we show a method for determining the urinary red blood cell morphology and obtaining information on hematuria.