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Blood test results - Questions

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Hi all. I just had bloodwork and it looks positive for celiac. We are moving forward with and endoscopy and biopsy to confirm. My bloodwork was done at LabCorp and the  results were as follows

Immunoglobulin A, Qn, Serum

My Value - 275 mg

Standard range - 87 - 352 mg


T - Transglutaminase (Ttg IgA)

My Value - 15 U/ml

Standard range - 0 - 3 U/ml

*low positive 4 - 10


As I wait for the confirmation from an endoscopy, this looks positive to me, but 3 things:

The first number is a baseline, right? So the normal range just means that my Ttg will actually mean something, right?

HOW positive is the Ttg number? Or is that even a thing? 

Has anyone here had a positive Ttg and then turns out they didn’t have celiac? 

I feel like I may be settling in here.  Thanks for taking the time to read (and hopefully respond) to my post. 




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Welcome Emshultz!

There are other medical conditions that can cause elevated Ttg. 

"According to the University of Chicago Celiac Disease Center there are other diseases that can cause elevated TTG antibodies, including Type 1 diabetes, Hashimoto’s thyroiditis, inflammatory bowel disease, and autoimmune liver disease." http://www.jessicamaddenmd.com/JESS-Blog/May-2017/The-Alphabet-Soup-of-Celiac-Blood-Testing#:~:text=According to the University of,disease%2C and autoimmune liver disease.

So, it is a nonspecific test for several autoimmune conditions. There is other blood work that can be done to narrow things down but the gold standard is the endoscopy/biopsy.

When is your endoscopy happening? You would not want to go on a gluten free diet until after further testing is done.

Edited by trents

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