4. A urinary tract infection
Another cause for blood in the urine is a urinary tract infection. This type of infection occurs when bacteria makes its way through the urethra and passes to the bladder. Once the bacterium is in the bladder, it can reproduce and cause a variety of symptoms, including blood in the urine.
Other symptoms of a urinary tract infection include strong-smelling urine, an increased sense of urgency when it comes to passing urine, pain while urinating, and a small amount of urine releasing when going to the bathroom. If treated properly, urinary tract infections can be cured, which will stop the appearance of blood in the urine.