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Tissue Transglutaminase Antibody (IgA) (TTIGA)
Test CodeLAB723
Quest Code
8821
Alias/See Also
TTIGA
CPT Codes
86364
Preferred Specimen
1 mL serum in gold top tube
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plain red top tube
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Microbially contaminated serum
Methodology
Immunoassay (IA)
Setup Schedule
Noon cutoff in dept; 4pm setup; Report by 11pm Monday thru friday
Report Available
3 days
Reference Range
| <15.0 U/mL | Antibody not detected |
| ≥15.0 U/mL | Antibody detected |
Clinical Significance
Tissue Transglutaminase Antibody, IgA, is useful in diagnosing gluten-sensitive enteropathies, such as Celiac Sprue Disease, and an associated skin condition, dermatitis herpetiformis.
Performing Laboratory
| Quest Diagnostics - South Region |
