Bloody urine is a symptom of bladder cancer, according to the Mayo Clinic. The urine might be dark yellow or dark brown as well as red. The blood might also be occult and not be able to be detected without a microscope.
The urine might also be pink or orange, according to the American Cancer Society. It might even clear up and remain clear for a time. However, if a malignancy is present, blood will once again be found in the urine.
Other signs that might indicate bladder cancer include urination that is frequent and painful as well as pain in the pelvic region and the back, says the Mayo Clinic.