Tissue Transglutaminase Antibody (IgA) (TTIGA)

Test Code
LAB723

Quest Code
8821

Alias/See Also
TTIGA

CPT Codes
83516

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: 4 days
Refrigerated: 7 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
<4 U/mL No antibody detected
≥4 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




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.