Tissue Transglutaminase IgA (Coeliac)**
Code
TAA
Sample Reqs
B
Turnaround
3 days
Special instructions
** If Tissue Transglutaminase (TAA) is LOW (<0.2U/ml) total IgA will be reflexed. If total IgA is low (<0.1g/L) deamidated gliadin IgG will be reflexed. If Tissue Transglutaminase (TAA) is HIGH (>/= 10 U/ml) or in the equivocal range (7–10 U/ml), endomysial IgA will be reflexed as confirmatory test for first time positive samples.
Sample type guide
B
Gold Vacutainer, SST/Gel anticoagulant, 5ml
Related specialties
Additional information
Updated Monday, 08 December 2025