Podcast
Questions and Answers
What should be used to ensure the stool specimen is preserved immediately after collection?
What should be used to ensure the stool specimen is preserved immediately after collection?
Which of the following is NOT a substance that can compromise the quality of stool specimens?
Which of the following is NOT a substance that can compromise the quality of stool specimens?
What is the appropriate action if a stool specimen cannot be preserved immediately?
What is the appropriate action if a stool specimen cannot be preserved immediately?
What is the correct ratio for mixing stool specimen with preservative?
What is the correct ratio for mixing stool specimen with preservative?
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When is it acceptable to use a stool specimen that has not been preserved immediately?
When is it acceptable to use a stool specimen that has not been preserved immediately?
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What should be done if the first stool examination is negative?
What should be done if the first stool examination is negative?
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Which of the following actions is recommended for the collection of stool specimens?
Which of the following actions is recommended for the collection of stool specimens?
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What is a necessary step after mixing the stool specimen with preservative?
What is a necessary step after mixing the stool specimen with preservative?
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What is a common misconception regarding the preservation of stool specimens?
What is a common misconception regarding the preservation of stool specimens?
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Why is it important to collect stool specimens before certain medications are administered?
Why is it important to collect stool specimens before certain medications are administered?
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Study Notes
Stool Specimen Collection Procedure
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Collect stool in a dry, clean, leakproof container. Avoid contamination with urine, water, soil, or other materials.
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Examine, process, or preserve fresh stool immediately. Refrigerated specimens are suitable only for antigen testing if preservatives are unavailable.
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Preserve stool as soon as possible. Use commercial kits following instructions; otherwise, divide specimen and preserve in 10% formalin and PVA (polyvinyl-alcohol) in a suitable container. Mix one volume stool with three volumes preservative.
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Ensure thorough mixing of the specimen with the preservative. Break up formed stool for proper mixing.
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Seal specimen containers tightly. Use parafilm or similar material, and place the container within a plastic bag.
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Certain medications interfere with stool analysis. Gather specimens before or after drug administration depending on the effect duration. Examples include: antacids, kaolin, mineral oil, non-absorbable antidiarrheal preparations, barium, bismuth (7-10 days clearance), antimicrobial agents (2-3 weeks), and gallbladder dyes (3 weeks).
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Repeated specimen collection may be necessary if the first examination is negative. Ideally, collect and examine three specimens spaced 2-3 days apart.
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Description
Test your knowledge on the proper stool specimen collection techniques. This quiz covers essential steps, including preservation methods and handling precautions to ensure accurate analysis. Understand how different medications can affect stool tests and when to collect samples.
