Urine occult blood 2+80 is an item in routine urinalysis that indicates the presence of red blood cells in human urine and that the body may be suffering from hematologic or urinary disorders. Under normal circumstances, urine does not contain blood, but when the body suffers from thrombocytopenia, aplastic anemia, hemophilia, the body’s blood clotting function is abnormal and thus this condition occurs. When the body suffers from infectious diseases such as urethritis and cystitis, bacteria will attack the mucous membrane of the bladder and urethra, resulting in broken capillaries. In the case of urological tumors such as bladder cancer and kidney cancer, the tumor cells can invade the normal tissues of the body and cause urethral ulcers. It may also be associated with external damage to the human pelvis causing blood vessels to break and blood to flow into the urine, or if suffering from urinary stones, stones cutting through the blood vessels can also occur.