Tissue Transglutaminase Antibody, IgA

Abbrev Code:TTGA   
Order Code:LAB723Order Name:Tissue Transglutaminase Antibody IGA
Synonyms:TTG Antibody, IgA; Celiac Disease; Coeliac Disease, Malabsorption
Methodology:FEIA (by ImmunoCAP)
CPT Codes: 86364 x1, 86364 x1
Turnaround Time:Performed Mon-Fri; results are reported the same day.

Collection Instructions

Optimal Volume:1 mL
Minimum\Peds Volume:0.6 mL
Container:Red or gold (gel)
Alternate Containers: Purple (EDTA), Red (no gel)
Causes for Rejection:Hemolyzed, lipemic or microbially contaminated specimens. Samples not separated from cells within 2 hours of collection.

Processing and Shipping

Specimen Processing:Within 2 hours of collection, centrifuge and aliquot 0.5 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab UM Specialty Core/Prot/Endo (Phadia ELiA G) 


Reference Range:

Less than 7.0 U/mL


7.0-10.0 U/mL


Greater than 10.0 U/mL




Use:Autoantigen of interest in celiac disease. See Tissue Transglutaminase Antibodies, IgA and IgG.

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