When is stool color concerning? Stool Colors and What They Can Tell You Your stool color can carry important clues about digestion, diet, or even disease. Most shades are harmless, but some changes signal the need for The color of your stool: what does it say about your health? Insentials 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, Black Stool? Find the right answer #Melena #HealthFacts #MedicalQuiz #biology #MCQsTest #quiz