Urine undamaged red blood cells absolute value does not exist more good or less good, more than the normal range is abnormal, should be analyzed for reasons. Slide method per high power field of view of red blood cells 0 ~ 3 is normal. Undamaged erythrocytes are erythrocytes that are basically of the same size, with intact cell membranes, in the shape of a biconcave disc, with a comparable hemoglobin content, yellowish in color, and with an overall shape similar to that of the erythrocytes on the Swiss-stained blood smears. In a few cases, shadow cells with loss of hemoglobin or spindled cells with a slight change in shape may also be seen. There are no more than two erythrocyte patterns in the entire urine specimen. The increase in undamaged erythrocytes is most often non-glomerular hematuria, suggesting that the main lesion is in the subglomerular area or in the urinary pathway. If the absolute value of undamaged erythrocytes is found to be high by examination, it is important to seek prompt medical attention to clarify the cause of the disease.