Who it is for
Is this coeliac test right for you?
Coeliac disease is a lifelong autoimmune reaction to gluten, the protein in wheat, barley and rye. It affects about one person in a hundred. A coeliac test you do at home gives you a first answer in fifteen minutes. People use it when they notice several of these:
- Chronic diarrhoea, bloating or wind
- Abdominal pain after meals
- Weight loss without trying
- Anaemia or extreme tiredness
- Slow growth in a child
Some people should check even without symptoms. Coeliac disease occurs in people with a genetic predisposition, so it clusters in families.
- A relative with coeliac diseaseParents, siblings and children are at higher risk
- Unexplained anaemiaLow iron with no clear cause
- OsteoporosisUntreated coeliac disease can weaken the bones
- Long-standing gut complaintsSymptoms attributed to a sensitive stomach for years
What it measures
What this coeliac test tells you, and what it does not
It tells you
- Whether your blood contains anti-tissue-transglutaminase (tTG) IgA antibodies at 10 U/mL or more
- These antibodies are the first-line blood marker doctors use to screen for coeliac disease
- From a fingertip blood sample, in fifteen minutes, at home
It does not tell you
- A diagnosis. Coeliac disease is confirmed by a doctor, usually with further tests
- Anything if you already eat gluten-free: the antibodies fall when gluten is removed, and the test can read negative
- Anything reliable with an IgA deficiency or another immunodeficiency: the result can be falsely negative
- Whether you have a wheat allergy or a non-coeliac gluten sensitivity. Those are different conditions
Contents
What is in the box
- 1 × test device in a sealed foil pouch
- 1 × dropper bottle of diluent 1 mL
- 2 × plastic capillary pipettes one is a spare
- 2 × sterile lancets one is a spare
- 1 × alcohol pad
- 1 × instructions for use in seven languages
- 1 × desiccant bag discard it, do not use it
Everything you need is in the box except a timer. Keep the foil pouch sealed until you test.
How it works
Five steps, about twenty minutes
01
Prepare the lancet
Very important: do not touch the trigger. Twist the grey protective cap off, never pull it. Keep turning until it comes away.
02
Take a blood sample from your fingertip
Very important: use the pipette correctly — lightly touch the drop of blood with the pipette’s tip, not the skin, do not squeeze the bulb, fill to the line.
03
Put the blood into the sample well
Press the pipette bulb to release the blood into the sample well. Then wait 30 to 40 seconds until it is absorbed.
04
Add exactly 4 drops of diluent
Very important: add the diluent only after the 30 to 40 seconds. Hold the vial upright and add exactly four drops, 2–3 seconds apart.
05
Read the result after 15 minutes
Not after 20. Set a timer.
Instructions for useWatch the video demonstration
On the clock: the fifteen minutes, step by step
- Drop in
Blood from the pipette into the sample well.
- Wait, then diluent
Not before 30–40 seconds. Then exactly four drops, 2–3 seconds apart.
- Colour moves
Lines begin to form. Not readable yet.
- Read
Read the result now, in good light.
- Stop
Do not interpret the result after 20 minutes.
Your result
How to read your coeliac test result
Two lines means the antibodies were found. One line means they were not. A faint second line still counts as a line. The pictures below show each result.
Antibodies found positive
Both C and T lines are visible. The sample contains anti-tTG IgA antibodies, a sign of gluten intolerance. See your doctor.
None detected negative
Only the C line is visible. No anti-tTG IgA antibodies were detected.
Invalid repeat
No C line. The result cannot be read. This happens most often when the diluent is added before the blood has been absorbed. Repeat with a new test and a fresh blood sample, and wait the full 30 to 40 seconds before you add the diluent.
A faint T line still counts as a line — the colour and intensity of the lines do not matter, only that they are homogeneous and complete. Read at 15 minutes; do not interpret the result after 20. The pictures are for illustration purposes; the actual lines may differ in intensity.
Next step
What to do with your result
If antibodies were found
See your doctor and show the result. Keep eating gluten until your doctor has finished testing — going gluten-free first makes the confirmation tests unreliable. The only treatment for coeliac disease is a strict lifelong gluten-free diet, and it should start with a confirmed diagnosis.
If none were detected but the symptoms stay
A negative result makes coeliac disease unlikely as long as you were eating gluten. If the symptoms continue, see your doctor; an IgA deficiency can hide the antibodies, and other conditions cause the same complaints.
The technology
What happens inside the test device
All of it happens on a paper strip inside the test device, in fifteen minutes.
- The sample moves
The drop of blood and the diluent travel along the strip by capillary action. No pump, no power.
- A marker finds your IgA antibodies
The strip carries a dye-tagged reagent that binds the IgA antibodies in your sample as it passes.
- The T line
Tissue transglutaminase is fixed at T. It catches only the IgA antibodies directed against it. At 10 U/mL or more, enough colour gathers to show a pink line.
- The C line
A second pink line forms at C whatever the sample holds. It proves the liquid flowed. No C line, no result.
This test has been used by professionals for more than 10 years. It gives one answer — above or below the threshold — not a number.
Quality
Made in France, checked batch by batch
30+
years of diagnostic expertise — rapid tests made in France since 1991
- ISO 13485The international quality-management standard for organisations that design, manufacture and service medical devices
- Every batch checkedDefined checks completed before a batch is released
- Monitored after releasePerformance tracked for as long as the batch is on the market
Notified body 0483ISO 13485Made in FranceCE-marked IVD
The Patris Health promise. No valid result? Write to us and we replace the test or refund the purchase price. It applies whenever the test was performed as the instructions describe, and we do not argue about it.
Specification
Technical data for the coeliac test
| Intended use | Qualitative immunochromatographic screening test for anti-tissue-transglutaminase IgA antibodies in capillary whole blood, for self-testing by lay users |
|---|---|
| Analyte | Anti-tissue-transglutaminase (tTG) IgA antibodies |
| Method | Lateral flow immunoassay |
| Cut-off | 10 U/mL |
| Sample | Capillary whole blood from a fingertip, pipette filled to the line |
| Time to result | Read at 15 minutes; do not interpret after 20 minutes |
| Agreement | 96.7 % overall agreement with reference methods (95 % CI 91.4–99.2 %) |
| Storage | 4 to 30 °C, do not freeze |
| Expiry date | Indicated on the label and the foil pouch |
| Device type | CE-marked in-vitro diagnostic medical device (IVD) for self-testing |
| Certificates | CE 0483 · ISO 13485 |
Questions
Asked before ordering
How accurate is a coeliac test at home compared with the laboratory?+
In the evaluation studies, the test agreed with laboratory reference methods in 96.7 % of cases (95 % CI 91.4–99.2 %). The difference is what you get back: the laboratory reports an antibody level, this test tells you whether you are above or below 10 U/mL. For a first answer that is enough; your doctor decides on the next steps. As with any rapid test, a false positive or false negative result can occur.
Does the finger prick hurt?+
It is a brief prick. Wash your hands with warm water first, massage the finger towards the tip for 10 to 15 seconds, and prick the side of the fingertip. The needle retracts into the lancet straight away.
I already eat gluten-free. Can I still test?+
Not reliably. The antibodies fall when gluten is removed from the diet, so the test can read negative even with coeliac disease. The test is valid only on a normal diet that contains gluten. Speak to your doctor before reintroducing gluten in order to test.
Can children use it?+
Not for children under two. For an older child with symptoms or an affected relative, ask your doctor whether a coeliac check makes sense.
Why does this test take fifteen minutes when others take ten?+
Each test has its own reading time. For this one, read the result at fifteen minutes and do not interpret it after twenty.
What if I cannot get enough blood?+
Massage the finger gently from its base towards the tip, with a light squeeze-and-release motion, until a large drop forms. Then fill the pipette to the line. Every kit has a spare lancet and pipette for a second attempt.
The lancet did nothing when I pressed it+
A lancet works only once. If the grey protective cap was pulled off by force instead of twisted, the lancet may already have been triggered. Take the spare lancet, give the cap a quarter turn, keep turning until it comes away, then press the lancet firmly against the side of the fingertip and press the trigger button.
Why did I get an invalid result?+
The most common causes are an incorrect amount of blood, adding the diluent before the blood was absorbed, or a test device that was exposed to moisture before use. A test device can be used only once, so repeat with a new test: fill the pipette to the line, wait 30 to 40 seconds, then add four drops. Write to us and we replace the test.
How do I dispose of the lancet?+
The needle retracts into the lancet body after use, so all components can go in household waste. If your pharmacy collects sharps separately, use that; it is the tidier option.
Sources
Mayo Clinic. (2026, March 4). Celiac disease: Symptoms and causes. https://www.mayoclinic.org/diseases-conditions/celiac-disease/symptoms-causes/syc-20352220
National Health Service. (2023, March 31). Coeliac disease. https://www.nhs.uk/conditions/coeliac-disease/
National Institute for Health and Care Excellence. (2015, September 2). Coeliac disease: Recognition, assessment and management (NICE guideline NG20). https://www.nice.org.uk/guidance/ng20/chapter/recommendations
National Institute of Diabetes and Digestive and Kidney Diseases. (2020, October). Definition & facts for celiac disease. National Institutes of Health. https://www.niddk.nih.gov/health-information/digestive-diseases/celiac-disease/definition-facts
Singh, P., Arora, A., Strand, T. A., Leffler, D. A., Catassi, C., Green, P. H., Kelly, C. P., Ahuja, V., & Makharia, G. K. (2018). Global prevalence of celiac disease: Systematic review and meta-analysis. Clinical Gastroenterology and Hepatology, 16(6), 823–836. https://doi.org/10.1016/j.cgh.2017.06.037
Last reviewed 2 October 2026
Instructions for use
Patris Health Coeliac Disease Home Test
Detection of anti-tissue transglutaminase IgA antibodies in whole blood. CE-marked in-vitro diagnostic medical device for self-testing.
This is the English part of the multi-language instructions for use. The printed instructions in the box carry the same text in seven languages: English, German, French, Italian, Spanish, Dutch and Slovenian. If the version printed on the instructions in your box differs from this one, follow the instructions in your box.
Precautions and test components
Read this before you start: safety, storage and what is in the kit.
Testing procedure
Step by step, with a picture for each step.
Interpretation of the results
How to read your result, with pictures.
About the test
Background, questions and answers, accuracy.
Questions about the test: help@patris-health.com
Instructions for use TTGV02, July 2025 · © Patris Health. Copying and reproduction are not permitted.
