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Originally Posted by jccglutenfree
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They are giving 2 different sets of info. I see that your PDF was updated 3/06. Granted...your link are for screening tests and my link is for followup testing. I don't know what the difference is. If gluten is in your system - you can tell it.
http://www.celiacdisease.net/CeliacD...5/Default.aspx
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What tests are needed to follow up appointments? How are they interpreted?
New guidelines on the diagnosis and treatment of celiac disease by the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition state that tTG-IgA testing should be used for follow-up care. Interpreting this test result is straightforward—a celiac on the gluten-free diet should have a negative test. The numerical value of the test is not important.
Follow Up Test #1
tTG-IgA: This test result should be negative
The numerical value of the test doesn't matter as long as the result is negative.
The University of Chicago Celiac Disease Program recommends additional testing, because the tTG test can sometimes be inaccurate in people with autoimmune disorders like Type 1 diabetes and thyroid disease. In addition, the tTG can sometimes become negative before a celiac has actually experienced significant healing.
For these reasons, Anti-Gliadin Antibodies (AGA) are also important. There are two types that need to be run: AGA-IgA, and AGA-IgG. In this circumstance, the numerical values of the tests are very important. The numbers should be as close to zero as possible, indicating a minimal antibody response to gluten. The additional advantage of these tests is that the blood can be drawn by any physician and sent to any laboratory.
Follow Up Test #2
Anti-gliadin IgA: This result should have a very low negative value
In this case, the numerical value does matter because a high negative test result still indicates that a patient is eating gluten. A low negative indicates that the diet is working well.
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