Lower gastrointestinal bleeding is what kind of stool color due to the specific bleeding site, the amount of bleeding, bleeding rate and other conditions of different, and make its color is also different, such as black stool, tar stool, fresh blood stool, and so on.
Anatomy of the duodenal flexure ligament as the boundary of the digestive tract for the upper and lower divisions, in which the lower gastrointestinal tract, including the jejunum, ileum and the large intestine part, if the intestinal bleeding occurs in a higher location, and the bleeding is small and slow, can be seen in the black stool.
If there is a moderate amount of bleeding and it is relatively fast, or moderately faster and slightly more bleeding in a lower location, tarry stools may be seen.
Bleeding from the lower GI tract that is lower in location and also faster can result in the formation of bloody stools, such as bleeding from the sigmoid colon and rectum in the large intestine area.
When you find a change in the color of the stool or feel discomfort in the abdomen, you should go to the hospital for appropriate examinations, such as routine stool, occult blood test, etc., and make a clear diagnosis under the guidance of a professional physician.