Stools - pale or clay-colored
Stools that are pale, clay, or putty-colored may be due to problems in the biliary system. The biliary system is the drainage system of the gallbladder, liver, and pancreas.
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Considerations
The liver releases bile salts into the stool, giving it a normal brown color. You may have clay-colored stools if you have a liver infection that reduces bile production, or if the flow of bile out of the liver is blocked.
Yellow skin (jaundice) often occurs with clay-colored stools. This may be due to the buildup of bile chemicals in the body.
Dark urine also may occur with clay-colored stools.
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Causes
Possible causes for clay-colored stools include:
- Alcoholic hepatitis
- Biliary cirrhosis
- Cancer or noncancerous (benign) tumors of the liver, biliary system, or pancreas
- Cysts of the bile ducts
- Gallstones
- Some medicines
- Narrowing of the bile ducts (biliary strictures)
- Sclerosing cholangitis
- Structural problems in the biliary system that are present from birth (congenital)
- Viral hepatitis
There are other less common causes not listed here.
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When to Contact a Medical Professional
Contact your health care provider if your stools are not the normal brown color for several days.
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What to Expect at Your Office Visit
Your provider will perform a physical exam. They will ask questions about your medical history and symptoms. Questions may include:
- When did the symptom first occur?
- Is every stool discolored?
- What medicines do you take?
- What other symptoms do you have?
Tests that may be done include:
- Blood tests, including tests to check liver function and for viruses that might affect the liver
- Endoscopic retrograde cholangiopancreatography (ERCP)
- Imaging studies, such as an abdominal ultrasound, CT scan, or MRI of liver and bile ducts
References
Korenblat KM. Approach to the patient with jaundice or abnormal liver tests. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 133.
Lidofsky SD. Jaundice. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 21.
Squires JE, Balistreri WF. Manifestations of liver disease. In: Kliegman RM, St. Geme JW, Blum NJ, et al, eds. Nelson Textbook of Pediatrics. 22nd ed. Philadelphia, PA: Elsevier; 2025:chap 403.