Medical Health Encyclopedia

Stool guaiac test


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Check with your health care provider about medication changes you may need to make. Never stop or decrease any medication without first talking to your health care provider.


How the test will feel

There is no discomfort when the test is done at home, because this test only involves a normal bowel movement. If stool is collected during an exam, there may be some discomfort in the anal canal and rectum.


Why the test is performed

This test detects blood in the digestive tract for the following reasons:

  • You are being screened or tested for colon cancer
  • You have abdominal pain, changes in bowel movements, or weight loss
  • You have anemia (low blood count)
  • You report blood in the stool or black, tarry stools


Review Date: 11/12/2010
Reviewed By: Todd Eisner, MD, Private practice specializing in Gastroenterology, Boca Raton, FL. Clinical Instructor, Florida Atlantic University School of Medicine. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).




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