
About this test
Measures IgG antibodies to deamidated gliadin peptides. It can add information in selected coeliac assessments, including where IgA-based testing is unsuitable, but should not be used alone to diagnose coeliac disease or non-coeliac gluten sensitivity.
At a glance
- Sample: Blood
- Collection: Self-collected sample using the supplied kit
- Estimated turnaround: 2 days from laboratory receipt of a usable sample
What this test measures
- Deamidated gliadin peptide IgG antibodies
- An immune marker that can contribute to selected coeliac assessments. A positive antibody result can support investigation for coeliac disease but normally requires clinical follow-up; reducing gluten before testing can cause a falsely reassuring result.
How clinicians use this test
Clinicians use Deamidated gliadin peptide IgG antibodies as part of investigating digestive symptoms or monitoring a known condition. The result may narrow the possibilities, but history, examination and other tests may still be needed for diagnosis.
Is this the right test for you?
Someone exploring the stated digestive marker with a clinician, provided urgent or persistent symptoms are not being delayed by postal testing.
Preparation and collection
Return the sample on the same day it is collected. Do not post over weekends or bank holidays.
Understanding your result
The laboratory will report Deamidated gliadin peptide IgG antibodies with an assay-specific reference range, threshold or qualitative interpretation. Read the biomarker explanation above for common reasons a result may be high, low, detected or reactive, then use the laboratory comment and clinical context to decide whether repeat or follow-up testing is needed.
Your results and next steps
Discuss a raised, detected or otherwise unexpected result with a GP or digestive-health clinician. Persistent symptoms, bleeding, weight loss or worsening pain need assessment even when the result is reassuring.
Limitations
A result cannot identify every cause of digestive symptoms. Collection quality, medicines, recent infection and other conditions may affect interpretation.
When to get medical help
Do not wait for a home-test result if you feel seriously unwell. Call 999 for a life-threatening emergency, or use NHS 111 when you need urgent advice and are unsure what to do.
Who this test is for
- People who want a clearer view of the concern described above
- Anyone comfortable using the stated sample-collection method
- People who want doctor-reviewed results and practical next-step guidance
How it works
How to prepare
- Read the instructions before collecting your sample
- Check whether timing, fasting or medication guidance applies
- Collect and post on the same day wherever possible
Understanding your results
Clear ranges and doctor guidance
Your secure report shows the measured values, reference ranges and a doctor’s comment where appropriate.