Question

a nurse is teaching a client about collecting stool specimens for fecal occult blood testing. which of the following should the nurse instruct the client to avoid before and during the testing period?
poultry
vitamin e supplements
yogurt
calcium supplements

Explanation:

For fecal occult blood testing, substances that can interfere with the test (cause false positives or negatives) need to be avoided. Vitamin E supplements have anticoagulant properties or can affect the chemical reactions of the test, while poultry (if cooked properly, but some guidelines may vary), yogurt, and calcium supplements generally don't interfere. So the nurse should instruct to avoid Vitamin E supplements.

Answer:

B. Vitamin E supplements