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Blood in the Urine

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It’s not normal to have blood in the urine. If you see it, you should always call your doctor. He or she will review your medical history, do a physical exam, look at your urine under a microscope, and order a culture of it.

Blood in the urine is often a sign of a problem with your kidneys, genitals, prostate, or urinary tract, and can be caused by:

  • Kidney stones (is most often accompanied by pain)
  • Kidney infection or urinary tract infection (usually accompanied by pain)
  • Cancer of the kidney, bladder, prostate, or ureter
  • Recent trauma
  • Kidney disease or polycystic kidney disease

Medicines like aspirin can also cause blood in urine, and so can strenuous exercise.