What Is Microscopic Hematuria?

Microscopic hematuria refers to a phenomenon in which the appearance of urine does not change significantly. After centrifugal sedimentation, the average number of red blood cells per high-power field of vision is greater than 3, and the red blood cells in the blood are discharged with the urine.

Microscopic hematuria

Microscopic hematuria refers to a phenomenon in which the appearance of urine does not change significantly. After centrifugal sedimentation, the average number of red blood cells per high-power field of vision is greater than 3, and the red blood cells in the blood are discharged with the urine.

The color of urine is not the same as hematuria. If hematuria is suspected, the urine must be tested to see if there are red blood cells before it can be finally determined.

Chinese name

Microscopic hematuria

Foreign name

microscopic hematuria

Inflammation

Acute and chronic glomerulonephritis, acute and chronic

Tumor

Malignancy in any part of the urinary system

According to the number of red blood cells in urine, it can be generally divided into microscopic hematuria and

1. First hematuria: hematuria is only seen at the beginning of urination, and the lesions are mostly

It refers to the abnormal increase of red blood cell excretion in the urine, and it is a signal that the urinary system may have serious diseases. Centrifugal sedimentation urine has 3 red blood cells per high-power microscope field, or non-centrifuged urine for more than 1 hour or 1 hour urine red blood cell count is more than 100,000, or 12 hours urine sediment count is more than 500,000, all show abnormal increase of red blood cells in urine, It is called hematuria. The milder ones only have increased red blood cells under the microscope, which is called microscopic hematuria; the severe ones are meat-washed or contain blood clots, which are called gross hematuria. Usually 1mL of blood per liter of urine is visible to the naked eye, and the urine is red or watery.

Exceeding the normal amount of blood in urine is called hematuria. If there is 1 ml of blood in 1000 ml of urine, the urine will look like blood or wash water, which is called gross hematuria. In routine urine tests, if the number of red blood cells in a high-power field under the microscope is more than 5, or the 12-hour urine Eddie counts more than 500,000 red blood cells, those who cannot be detected by the naked eye are called microscopic hematuria.

After finding red urine, parents should not panic. First, they must distinguish between true or false hematuria. Some drugs can cause red urine, such as aminopyrine, phenytoin, rifampicin, phenol red, etc .; it needs to be distinguished from true hematuria.