Specimen Requirements
Title
Tissue Transglutaminase (tTG) Antibodies (IgG, IgA)
Specimen Requirement
Collect SST/1.0 mL serum, after 30 minutes of clotting, promptly centrifuge and send.
Methodology
Immunoassay (IA)
Stability
Room temp: 7 days, Refrigerated: 14 days, Frozen: 30 days
Reference Range
Reference ranges are determined by the performing laboratory and will show on the report.
Turnaround
3 days Performed Tuesday-Saturday
Clinical Use
Tissue Transglutaminase Antibody, IgA, is useful in diagnosing gluten-sensitive enteropathies, such as Celiac Sprue Disease, and an associated skin condition, dermatitis herpetiformis. The IgG test is useful in patients who are IgA-deficient. The IgG test also provides support for gluten-sensitive enteropathies beyond the IgA test.
Test Code
TTAG