This Celiac.com FAQ on celiac disease will guide you to all of the basic information you will need to know about the disease, its diagnosis, testing methods, a gluten-free diet, etc.
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What are the major symptoms of celiac disease?
Celiac Disease Symptoms
What testing is available for celiac disease?
Celiac Disease Screening
Interpretation of Celiac Disease Blood Test Results
Can I be tested even though I am eating gluten free?
How long must gluten be taken for the serological tests to be meaningful?
The Gluten-Free Diet 101 - A Beginner's Guide to Going Gluten-Free
Is celiac inherited? Should my children be tested?
Ten Facts About Celiac Disease Genetic Testing
Is there a link between celiac and other autoimmune diseases?
Celiac Disease Research: Associated Diseases and Disorders
Is there a list of gluten foods to avoid?
Unsafe Gluten-Free Food List (Unsafe Ingredients)
Is there a list of gluten free foods?
Safe Gluten-Free Food List (Safe Ingredients)
Gluten-Free Alcoholic Beverages
Distilled Spirits (Grain Alcohols) and Vinegar: Are they Gluten-Free?
Where does gluten hide?
Additional Things to Beware of to Maintain a 100% Gluten-Free Diet
What if my doctor won't listen to me?
An Open Letter to Skeptical Health Care Practitioners
I can't remember, but it was a few years ago and maybe it had Maltodextrin in it, or maybe it was the 'flavorings' - which I never eat unless it's from a company like Kraft or McCormick that labels clearly. But given that you eat it safely, maybe I'll contact the company for a clear answer.
So the simple explanation is - You eat gluten. It travels along and gets to your small intestine. For some reason, your small intestine feels it is an invader. but instead of making antibodies that "attack" the gluten, the small intestine cells make antibodies that attack itself. Sort of misguided, but that's what happens. Now these antibodies are in the small intestines . It can take weeks to make enough of them in the small intestine for them to make it to the blood stream in big enough numbers to show up on a Celiac blood test.
So, one meal of gluten, after a long period gluten-free, probably wouldn't effect the level of antibodies in the blood.
Hi - I think some of the issue here may be stemming from confusion about the word "exposed" and the two things in bold above -- while you are very strict about eating gluten, am I right that you've been accidentally eating some and for the past month have accidentally been not-gluten-free? If so, that likely is the cause of your cognitive problems, which I'm sure must be really difficult. It sounds like you're on the right track with trying to make sure you get this accidental gluten ingestion eliminated from your environment. Have you checked all your meds, hand moisturizers, etc. (I don't worry about most care products, but I do care about what goes on my hands)? Dedicated toaster, cutting board, non-stick cooking utensils and pots?
Also, is your thyroid ok? As auto-immune disorders seem to run in packs, it's not unusual to have Hashimotos Hypothyroidism and Celiac together.
As far as communicating the issue to others (your original question), I think it's fair to say to those who know you well that this is a side effect of an accidental glutening, and as for others, I think you can just let it go. Chances are they don't see your struggles as intensely as you feel them. Bringing it to their attention may even make it more of an issue.
my thinking was that if I ate gluten tonight again , then the reaction would be there tomorrow not that there would be gluten for them to find exactly. So from what your saying It would make sense - i.e. if my body was going to react to gluten with antibodies then by eating gluten say tonight it would mean they would be in my system tomorrow. Now of course they could be in my system anyway from the gluten I ate a few days ago , but it would be more of a sure thing if id eaten it the day before I would have thought.