Coeliac Test


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 Tissue Transglutaminase (tTG)

This finger prick blood test checks for Tissue Transglutaminase (tTG) Antibodies. High levels can diagnose Coeliacs. 

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About this test

This finger prick blood test analyses for tissue transglutaminase IgA antibodies. High levels are characteristic of Coeliacs Disease. 

What is Included?

 Home Finger Prick Blood Test Kit

✓ Recorded, next working day delivery of your test kit (if booked before 3.30pm Mon-Thur)

 24hr Tracked Royal Mail Return

 Results 5 working days from receipt by the laboratory

 Patients emailed with results plus analysis and health advice by a ZoomDoc GP


Coeliacs disease is an autoimmune condition whereby the body’s immune system attacks its own tissues when you eat gluten. This causes damage to the lining of the gut and means the body can’t properly absorb nutrients from food. 

Classic symptoms include gastrointestinal problems such as chronic diarrhoea, abdominal distention, malabsorption, and a loss of appetite. 

Some of the many additional symptoms include:

  • Fatigue
  • Bloating
  • Joint pains & Arthritis
  • Osteoporosis or osteopenia (Bone Loss)
  • Depression / Anxiety
  • Peripheral neuropathy
  • Infertility
  • Recurrent miscarriages

Diagnosis of Coeliacs is typically made by a combination of blood antibody tests like the one that we provide and intestinal biopsies.. 

When to test

This blood sample should be collected following six weeks of a gluten-containing diet to ensure accurate results. If you stop gluten food products prior to taking this test, you may get inaccurate results. 

We also advise patients to only undertake this test on Monday – Thursday mornings and then sending it directly back to our laboratory on the same day. This ensures that there are no delays in our lab receiving your sample.



Specific biomarkers within this test includes:

Tissue Transglutaminase (TTG)



Any Questions?

If you have any queries please check our list of frequently asked questions or get in touch with one of our experts who will be happy to help.

Frequently Asked Questions

  • How accurate are ZoomDoc Wellness Tests?

    ZoomDoc finger prick blood tests are as accurate as tests you would normally take via a normal regular blood test at hospital or in a GP setting.

    All tests are analysed in labs in the UK and are UKAS & ISO 15189 accredited.

    All of our partner laboratories undergo frequent quality control checks to ensure they meet the highest standard of testing. The equipment and analysers used are all designed for the specific function of capillary blood testing. All ZoomDoc test kits come with clear instructions.

  • What laboratories do ZoomDoc use?

    All laboratories that ZoomDoc use are UKAS & ISO 15189 accredited.

    Most samples are analysed at The Doctors Laboratory which is based in Central London. This lab is the largest private laboratory in the UK.

  • How are my tests reviewed?

    All test results are analysed by our team of Doctors.

    They will comment on your results and often provide both advice and health recommendations.

    If there is any worrying results our Doctors will get in touch and advise on next steps.

  • Is this test suitable for children?

    ZoomDoc do not recommend purchasing our wellness tests for children.

  • Can I discuss my results with a ZoomDoc GP?

    Our team of GPs are available via the ZoomDoc app to discuss any queries or questions you may have.

  • What will happen after purchasing a Wellness Test?

    After purchase of your test kit, it will be immediately dispatched to your home or workplace. After it arrives, you must activate the test with the details of the patient undertaking the test. There are full instructions on the test kit box.

  • Can I give my test to someone else?

    Yes, if you receive or order a wellness test kit and want to gift it to someone else, you can do this. However, the test must always be activated with the personal details of the individual taking the test.

How to take your home blood test



” Coeliacs disease affects about 1% of the population and it can often be tricky to diagnose. This test is highly accurate but it is important to continue to be consuming regular gluten based foods for at least 6 weeks prior to undertaking this investigation. The only treatment is avoiding gluten based products although there are many gluten free foods now available. 

Dr Kenny Livingstone – ZoomDoc GP



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