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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


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Updated Monday, 08 December 2025