Blood in urine can be due to many reasons like problems with urinary tract, prostate, genitals and kidneys. Other reasons can be kidney or bladder cancer, kidney or bladder stones, fracture of pelvis, kidney failure, UTI, injury to kidneys, Polycystic kidney disease, recent catheterization, kidney biopsy, hemophelia, low platelets count, Sickle cell disease, blood clot in kidneys, and medicines like warfarin. These are some possible reasons of blood in urine. Final diagnosis will be confirmed by the doctor.