Tissue Transglutaminase (tTG) Antibody (IgA)

Test Code
8821


Alias/See Also
LAB723
TTGA TTG AB


CPT Codes
86364

Preferred Specimen
1 mL serum


Minimum Volume
0.5 mL


Transport Container
Transport tube


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic


Methodology
Immunoassay (IA)

Setup Schedule
Tues-sat


Report Available
2-5 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 Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.