Answer :
Final answer:
The guaiac test identifies microscopic blood particles in feces, aiding in detecting gastrointestinal bleeding.
Explanation:
The guaiac test detects microscopic particles in the feces associated with blood. This test is utilized to identify blood that is not visibly apparent in the stool, often indicating gastrointestinal bleeding.
An example of a condition where the guaiac test is used is in detecting occult blood found in individuals with issues such as colitis, diverticulitis, or colorectal cancer.
Another indicator of blood presence in the stool sample, seen under a microscope, includes red blood cells, further confirming the need for a guaiac test to identify the source of bleeding.
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