Gluten Sensitivity Evaluation
Profile details
Gliadin deamidated lgG
Total IgA*
Tissue Transglutaminase (IgA)
Code
GSA
Sample Reqs
B
Turnaround
2 days
Special instructions
To reduce the risk of missing IgA deficient patients, a Total IgA will be run for all low Tissue Transglutaminase IgA results. If IgA deficiency is identified, a reflex deamidated Gliadin IgG will be carried out to determine whether the patient is likely to have coeliac disease. Coeliac pathway:
- Initial TTG IgA samples are received and tested
- If TTG IgA is LOW <0.2 U/ml reflex testing for Total IgA will be undertaken
- If Total IgA is LOW <0.1 g/L then reflex testing for deamidated Gliadin IgG test will be undertaken
- If TTG IgA is HIGH >/= 10 U/ml then reflex testing for Endomysial IgA will be undertaken as a confirmatory test for first time positive samples.
Sample type guide
B
Gold Vacutainer, SST/Gel anticoagulant, 5ml
Related specialties
- Immunology
Additional information
- Request forms
- Specimens: collection, packaging, transport, rejection criteria
- Discontinued tests