尿红细胞形态分析

How Should Urine Sediment Analysis Be Used?

However, automated microscopic urinalysis devices may not properly identify dysmorphic cells and may be unable to specify type of cellular cast, resulting in limited accuracy in pathological urine samples.82,84,85 This limits their use when evaluating for a glomerular origin to hematuria. Urine specimens flagged as abnormal must still be manually inspected by trained staff to identify important abnormalities such as dysmorphic RBCs or RBC casts.

Although there is no standard, widely accepted definition of what constitutes glomerular hematuria, presence of ≥40% dysmorphic RBCs or ≥5% acanthocytes in 2 of 3 urine samples may be considered as glomerular in origin.