Urine routine has red blood cells is how to return a responsibility

Urethral stones

can block the urethra, resulting in increased pressure in the urethra, which may cause the blood vessels in the urethral

wall to rupture, resulting in red blood cells entering the urine, resulting in the

3

,

glomerulonephritis with

glomerulonephritis, due to inflammation on the local stimulation, may lead to glomerular capillary wall damage, resulting in red blood cells leaking into the urine, resulting in the occurrence of the above situation.