Stool Color
- Sample Type
- Standard
- Fasting
- No
- Unit
- N/A
Stool color is a primary physical observation in a Complete Stool Examination. It provides immediate diagnostic clues regarding gastrointestinal (GI) health. Normal brown color is due to stercobilin, a byproduct of bilirubin. Deviations can signal pathology: Clay-colored (acholic) stools suggest biliary obstruction; black/tarry (melena) stools suggest upper GI bleeding; bright red (hematochezia) suggests distal GI bleeding.
Why Context Matters
External factors frequently alter stool color. Ingestion of iron supplements, bismuth (Pepto-Bismol), or certain foods like beets, blueberries, and green leafy vegetables can mimic pathological states like melena or hematochezia.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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