Saundby's test
(sônd′bēz)- A test for blood in the stool in which hydrogen peroxide solution is added to a mixture of a saturated benzidine solution and a small quantity of feces in a test tube; a persistent dark-blue color indicates the presence of blood.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.