Which statement by a client indicates the need for further education about the guaiac fecal occult blood test?

• A. "I will avoid eating red meat for three days prior to the test."
• B. "I will drink orange juice to get my daily vitamin C."
• C. "I will take my medication as usual before the test."
• D. "I will not take any aspirin for a week before the test."

Answer: (B)

The statement that indicates the need for further education about the guaiac fecal occult blood test is the one about drinking orange juice to get daily vitamin C. This is crucial because vitamin C can interfere with the test's accuracy. High doses of vitamin C can cause false-negative results, meaning that a blood source may be missed when it is actually present. Therefore, clients should be advised to avoid vitamin C supplements and possibly high-vitamin C foods like citrus fruits for a specified time prior to the test to ensure accurate results.

The other statements demonstrate an understanding of the necessary precautions for the test. Avoiding red meat and aspirin prior to the test reflects appropriate knowledge, as both can influence the test results—for example, red meat can cause false-positive results. Taking medication as usual is generally acceptable unless otherwise instructed, indicating that the client understands their treatment should not alter the test outcome unnecessarily.