Whether positive occult blood in urine is serious or not must be analyzed on a case-by-case basis, most of them are not serious. If the positive urine occult blood is due to a tumor in the urinary tract, it may be more serious and needs to be checked to see exactly what part of the kidney, ureter, or bladder the tumor is, the early, middle, and late stages of the tumor, and whether there is infiltration around the tumor. Occult blood in the urinary tract may also be caused by urinary tract stones and inflammation of the urinary tract, which are the two most common diseases. Urinary tract tuberculosis can also present with positive urinary occult blood, while trauma can also cause having hematuria and taking anticoagulants can also cause urinary tract bleeding. It is important to find the cause of the bleeding and treat the primary cause.