What are some causes of blood in the urine besides a urinary tract infection?

Outside of urinary tract infections, the most common causes of blood in the urine are bladder and kidney infections, certain medications and inherited disorders, injury, strenuous exercise and kidney stones, according to Mayo Clinic. Additionally, blood in the urine is a common symptom of cancer or kidney disease.

Blood in the urine is a symptom of prostate, kidney and bladder cancer, but it is also a side effect of anti-cancer medications, certain blood thinners, and aspirin, according to Mayo Clinic. Additionally, sickle cell anemia, Alport syndrome and disorders that affect the flow of urine through the urethra, such as an enlarged prostate, also commonly cause urinry bleeding.