Stool guaiac test

Alternative Names

Guaiac smear test; Fecal occult blood test – guaiac smear; Stool occult blood test – guaiac smear

Definition of Stool guaiac test

The stool guaiac test finds hidden (occult) blood in the stool (bowel movement), even when you cannot see the blood yourself.


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. – 11/12/2010

ADAM Medical Encyclopedia

Article written by

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission ( URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability.