The stool guaiac test, also known as FOBT, screens for what?

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Study for the NHCO Phlebotomy Test. Experience flashcards and multiple-choice questions with hints and explanations. Prepare effectively for your phlebotomy exam!

Multiple Choice

The stool guaiac test, also known as FOBT, screens for what?

Explanation:
Stool guaiac testing screens for occult blood in the stool. The guaiac reagent reacts with the heme in hemoglobin via a peroxidase-like reaction when hydrogen peroxide is present, causing a blue color if blood is in the stool. This makes FOBT a tool for detecting hidden GI bleeding and assessing colorectal cancer risk. It does not test for bacteria, fecal fat, or stool pH. Keep in mind dietary and supplement factors can influence results, and a positive test typically prompts further evaluation.

Stool guaiac testing screens for occult blood in the stool. The guaiac reagent reacts with the heme in hemoglobin via a peroxidase-like reaction when hydrogen peroxide is present, causing a blue color if blood is in the stool. This makes FOBT a tool for detecting hidden GI bleeding and assessing colorectal cancer risk. It does not test for bacteria, fecal fat, or stool pH. Keep in mind dietary and supplement factors can influence results, and a positive test typically prompts further evaluation.

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