HLA-DQ2/DQ8 (coeliac genetics)
What this test measures
Almost everyone with coeliac disease carries one of two tissue types, HLA-DQ2 or DQ8, but so do a third of the general population. A negative result therefore makes coeliac disease very unlikely, while a positive on its own means little.
Why doctors request it
Used when someone has already cut out gluten before testing, or when antibody results are unclear.
What commonly pushes it up
- Carrying DQ2 or DQ8, which a third of people do
What commonly pushes it down
- Not applicable
Everyday reasons for a value outside the range
- A result is fixed for life and only needs testing once
About the sample
No fasting needed.
Upload a photo or PDF and see every line against the range your lab printed, explained in plain English. First report free.
Read my report freeThis is an educational summary of results you uploaded. It is not medical advice, a diagnosis or a treatment plan, and it does not replace the doctor who requested the test. If you are worried, or a result is marked outside range, discuss it with your doctor. Written and reviewed by a UK consultant physician. Reference ranges vary between laboratories.