Black Stool Vs Dark Brown The Color Of Your STOOL Says THIS About Your Health Check Your ! What does your poop colour indicate? Pay attention. There's a lot to be learned by the colour and consistency of your stools, as well as the frequency and how easily passed Hematochezia vs. melena: What's the difference? UT MD Anderson GASTROINTESTINAL HEMORRHAGE (2): Melena. Melena, the passage of black, tarry stools, usually implies blood loss greater than 500 ml originating anywhere between the oropharynx and the right hemicolon. Melena occurs most often, What Does It Mean If My Poop Is Black? Melena Guide