Coeliac Disease Antibody Blood Test

Persistent bloating, digestive discomfort, or unexplained fatigue can sometimes point to an autoimmune reaction to gluten. This blood test screens for Tissue Transglutaminase (tTG) antibodies — the primary marker for coeliac disease — helping you get clear answers and take informed next steps.
A doctor-written report.
Doctor-written reports and free doctor consultations on selected tests.
- Your blood test — processed by a UKAS-accredited UK laboratory.
- A doctor-written report — your results reviewed personally by Dr James Coleman, a practising GMC-registered GP, and explained in plain English.
- Clear next steps — what your results may mean, and what to do next where appropriate.
- Optional GP appointment — want to talk it through? You can book a private appointment to discuss your results.
Choose how you'd like your sample taken
Pick the option that suits you. The test is the same. Only the way we collect your sample changes.
- Doctor-reviewed report
- Free tracked delivery
- Results in 2–3 working days
- Actionable next steps

Dr James Coleman
“Every Brooksby report is written personally. You get a plain-English interpretation and a clear next step — not just numbers on a page.”
Simple from start to finish
Order your test
Choose online in minutes. Your kit is dispatched and on its way to you.
Collect your sample
Venous collection
Post it back
Drop your pre-paid, tracked envelope in any postbox. We take it from there.
Your doctor-written report
Reviewed by a practising doctor. Delivered to your secure portal within 2–3 working days.
Follow-up if you need it
If anything in your report needs discussing, you can request a follow-up with our GP from your account — free, and entirely optional.
Your results, explained in a written report
What you actually get in this test
1 marker analysed by a UKAS-accredited UK laboratory.
A GP-led service, not a lab with a website
Written interpretation, not a PDF
Your results come with Dr Coleman's written interpretation — what each marker means and what to do about it, in plain English.
doctor-written report included
Every report is written by Dr Coleman, a practising GP — not auto-generated and not outsourced.
A named doctor, not a team
Your report is signed by Dr Coleman personally. Not an anonymous review pool.
UKAS-accredited UK lab
Same accreditation standard used by NHS hospitals. Consistent, reliable analysis.
One-off, no subscription
You order the test, you get the report, you own the data. No ongoing fees.
Common questions
Everything you need to know before ordering your Coeliac Disease Antibody Blood Test.
What does the coeliac antibody test measure?
This test measures Tissue Transglutaminase (tTG) antibodies in your blood. These antibodies are produced when someone with coeliac disease eats gluten. A raised level strongly suggests an autoimmune reaction to gluten in the gut.
Who should consider this test?
This test is useful for:
Anyone with persistent bloating, diarrhoea or abdominal discomfort
Those with unexplained fatigue or iron deficiency anaemia
People with a family history of coeliac disease
Anyone experiencing unexplained weight loss or mouth ulcers
Do I need to be eating gluten before this test?
Yes. You must be eating gluten regularly for at least 6 weeks before the test. If you have already removed gluten from your diet, the antibodies may have dropped to normal levels and the test could give a falsely reassuring result. Speak to your GP before reintroducing gluten if you have concerns.
Can this test diagnose coeliac disease?
A strongly positive tTG result makes coeliac disease very likely, but a formal diagnosis usually requires confirmation with a gut biopsy arranged through your GP. A negative result makes coeliac disease unlikely but does not completely rule it out in certain cases.
How will I receive my results?
Secure online results with a GP-written explanation from Brooksby Medical in 2 to 3 working days.
More about Brooksby
Is my report reviewed by a doctor?
How accurate are the results?
Who writes the reports?
How long do results take?
Do I need a GP referral?
Can I share my results with my NHS GP?
What happens if something is abnormal?
What is the difference between venous and fingerprick?
Is my data kept private?
Drop us a message — a real person will reply.
We usually get back within one working day. Anything you want to ask before ordering — collection, what's included, fasting, your report, results timing — go ahead.
Ready to order?
A simple sample, a UKAS-accredited lab, and a doctor-written report personally interpreted by Dr Coleman.
Order my Coeliac Disease Antibody Blood Test →