Detecting blood in the stool can be an important indicator of gastrointestinal bleeding, which can occur in conditions such as peptic ulcers. Here are some ways to detect blood in the stool:
Visible Blood: In some cases, blood in the stool may be visually evident. Stools may appear bright red or have visible streaks of blood. This type of bleeding is often associated with lower gastrointestinal bleeding, such as hemorrhoids or anal fissures.
Dark, Tarry Stools (Melena): Dark, tarry stools can indicate upper gastrointestinal bleeding, which is commonly associated with conditions like bleeding peptic ulcers. The dark color results from the digestion of blood as it passes through the stomach and small intestine. Melena can have a distinct, foul odor.