In hematuria, your kidneys — or other parts of your urinary tract — allow blood cells to leak into urine. Various problems can cause this leakage, including: Urinary tract infections. These occur when bacteria enter your body through the urethra and multiply in your bladder.

What is the most common cause of hematuria?

Infection. Infection is one of the most common causes of hematuria. The infection could be somewhere in your urinary tract, your bladder, or in your kidneys. Infection occurs when bacteria move up the urethra, the tube that carries urine out of the body from the bladder.

How urgent is hematuria?

If you ever experience blood when you urinate, you should see a doctor immediately. That's because most cases of gross hematuria are typically linked to cancer or other issues that require immediate medical care.