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? - list blood tests, endo with biopsy, genetic test and enterolab (not diagnostic)
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
Where can I buy gluten-free stuff?
Support this site by shopping at The Celiac.com Store.
Obviously from the outside it's difficult to comment, but if I were you I'd leave allergies for now and pursue definitive celiac testing via your doctor and preferably a gastroenterologist. They're the first port of call for digestion issues. If you do wind up being celiac it's possible that other allergies or intolerances would resolve or improve in any case once you've been on the diet for awhile. That's been my experience.
Ps note that wheat allergy is completely different and unrelated to celiac or non celiac gluten sensitivity.
Hello and welcome
From reading others accounts there's a big variation in how quickly gluten antibodies respond to the gluten diet. I did similar to you and my doctor said that 1 week back on should be enough to show up in a test, but he didn't know what he was talking about sadly...
The 2 week figure refers to the endoscopy, for blood testing 8-12 weeks on gluten is more normal.
Basically if it comes back positive fine you have your answer. If its negative it may be a false negative due to your going gluten free beforehand.
If you want to pursue a diagnosis then yes. Don't go off gluten again until you confirm that all testing is complete. Keep a journal noting any symptoms, that may be useful to you later. More info here:
There's some good info in the site faq:
I know how you feel! Partway through my gluten challenge I knew that too results notwithstanding. Fwiw I think you've found your answer. Good luck!
Learn more about testing for celiac disease here:
You do have to be on a gluten diet for ANY of the celiac tests (blood and biopsy) to work. While the endoscopy (with biopsies) can reveal villi damage, many other things besides celiac disease can cause villi damage too:
So, both the blood test and endoscopy are usually ordered. There are some exceptions, but those are not common.