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What Causes Blood In Urine?

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Updated March 19, 2014

Written or reviewed by a board-certified physician. See About.com's Medical Review Board.

Question: What Causes Blood In Urine?
Finding blood in your urine, particularly if you're not menstruating, is a frightening experience. A number of different conditions may cause blood in urine.
Answer: The most common cause in women is vaginal bleeding or normal menstrual bleeding. Other possible causes of blood in urine, or bloody-looking urine, include:

Should you see blood in your urine that is not caused by menstrual bleeding, see your doctor as soon as possible for evaluation and diagnosis.

Source: Medline Plus. Urine - Bloody. http://www.nlm.nih.gov/medlineplus/ency/article/003138.htm. Accessed 11/03/10.

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