Question

review the fourth paragraph. understand whats wrong with them, fasano says. 4 doctors use blood tests to look for signs of celiac disease. before the test, patients should continue eating foods with gluten. by maintaining a regular diet, patients can also help doctors determine if their symptoms are due to a form of gluten sensitivity that is not celiac disease. gluten sensitivity is something a person may grow out of over time, fasano explains, whereas celiac disease is a lifelong condition. if tests and symptoms suggest celiac disease, doctors can confirm the diagnosis by removing a small piece of a persons intestine to inspect it for damage. 5 genetic tests can be used to detect the genes that turn on the bodys which of the following would be most relevant to add to the fourth paragraph? where and by whom the blood test is performed why a patient should continue to ingest gluten prior to the blood test what the genetic test for celiac disease genes involves

Explanation:

The fourth paragraph is about blood tests for celiac disease and gluten sensitivity. It mentions that patients should continue eating gluten - containing foods before the test. Adding an explanation of why this is necessary (why a patient should continue to ingest gluten prior to the blood test) would make the paragraph more comprehensive. The first option (where and by whom the blood test is performed) is not relevant to the main content of the paragraph which is about the test's requirements and implications. The third option (what the genetic test for celiac disease genes involves) is about a different type of test (genetic) which is not the focus of the fourth paragraph (the fourth paragraph is mainly about blood tests).

Answer:

why a patient should continue to ingest gluten prior to the blood test