Do we have some data on serum marker correlation with symptoms?

[heyitsme]

Personally for example TTG IgA has zero correlation with my symptoms. It's been negative for a long time (even despite eating tiny amounts of gluten, which I know isin't the case for everyone) yet I have still persisting, debilitating symptom (specifically brain fog - and let's just assume it's because of celiac. I'm tired of people suggesting alternative explanations when I'm not even asking for it). We also know that a lot of people need to take "gluten challenge" for their antibodies to be elevated. I guess vast majority actually from what I read. So TTG IgA need proper amount of gluten, but occurence of symptoms does not. The correlation is weak, if any. So I wonder about other serum markers, specifically anti DGP gliadin IgG, which seems to still be positive in my case. Or others. Is there any research on that? Do you have any experiences?

[Scott Adams]

Currently this is in the research phase, but zonulin levels may one day be a way to measure a gluten reaction:

 

[Scott Adams]

Another marker in the research stage is cytokine levels.

 

 

[heyitsme]

@Scott Adams Yes, I recently found some article on that: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7697360/

There is nice table with all of the markers and cytokines are also there. I found the lab that checks some cytokines, IL8 and IL1b among others which apparently might be useful with celiacs. Will be doing the test next week.

[Scott Adams]

Before doing the test you may want to ask the lab whether or not you need to eat gluten before the test is done. I'm not sure what the protocol would be for such a test.

[knitty kitty]

@heyitsme,

Anemia, diabetes and Thiamine deficiency will cause poor production of tTg IgA antibodies.  

Have you had a Total IgA test done?

DGP IgG antibodies are still produced with these conditions.  

Some of us are seronegative.