ORDER
Place your order
Order online, no GP referral required for direct-access tests.
Practitioner grade
Practitioner only
Coeliac disease blood screen
Screen for coeliac before removing gluten
Measures coeliac-associated antibodies to help assess whether gluten may be driving symptoms.
What it measures
- Tissue Transglutaminase IgA (tTG IgA)
- Tissue Transglutaminase IgG (tTG IgG)
- Deamidated Gliadin Peptide IgA (DGP IgA)
- Deamidated Gliadin Peptide IgG (DGP IgG)
- Total IgA
Test details
CollectionSee product page
Results in48 hours
LabNutriPath
Practitioner consult session
A 15-minute consultation. An email link will be included in your order confirmation to make the booking.
Optional 1:1 with our clinical team · $49
Clinician-reviewed report
Plain-English + GP PDF
Direct-access ordering
Clinical interpretation included
Sample to result
From sample to actionable answer.
Direct-access pathology and assessments. Every result is reviewed by a clinician before it reaches you.
RECEIVE
Get your form or kit
Email pathology form, postal collection kit, or assessment link within 1–2 business days.
COLLECT
Collect or complete
At any pathology network, at home, or online, depending on the test.
RESULTS
Clinician-reviewed report
Plain-English summary plus GP-formatted PDF. Share with your practitioner or keep private.
What it measures
Tissue Transglutaminase IgA (tTG IgA)
Blood (SST)
The primary coeliac screening antibody. Highly sensitive and specific when gluten is in the diet.
Reference range: Under 20 U/mL negative
Tissue Transglutaminase IgG (tTG IgG)
Blood (SST)
Used in people with IgA deficiency to avoid false negatives on the IgA based test.
Reference range: Under 20 U/mL negative
Deamidated Gliadin Peptide IgA (DGP IgA)
Blood (SST)
Adds sensitivity, particularly in children and in seronegative coeliac disease.
Reference range: Under 20 U/mL negative
Deamidated Gliadin Peptide IgG (DGP IgG)
Blood (SST)
The most useful marker in IgA deficient individuals.
Reference range: Under 20 U/mL negative
Total IgA
Blood (SST)
Essential context. IgA deficiency affects 1 in 400 people and will produce false negative results on IgA based coeliac tests.
Reference range: Within reference range
How it works
Your practitioner will advise on collection. Follow the kit instructions and return your sample as directed.
Warnings: This is a health information tool and is not a diagnosis. Discuss your results with your practitioner before making changes to medication, supplements or treatment.
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Frequently asked.
Common questions about how OptiLabs works: testing, supplements, clinician review, returns and timing.
Are the supplements safe?
All carry an AUST L designation from the TGA. Every order is reviewed by a clinician before dispatch.
Do I need a referral?
No. All tests are available to order directly. Our lab partner is NATA and RCPA accredited, operating as a direct-access pathology service.
Begin your investigation
Personalised health. Clinical rigour. Delivered to you.
A proper investigation into what's driving your symptoms, with a clinician-reviewed report, not a cryptic lab printout.