Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

TISSUE TRANSGLUTAMINASE ANTIBODY (IGG,IGA)

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB3165         Geisinger Epic ID: 45699

SPECIMEN COLLECTION
Specimen type:
Serum
Preferred collection container:
Alternate Collection Container:
6 mL red-top (plain, non-serum separator) tube
Specimen required:
1 mL serum; minimum 0.5 mL

SPECIMEN PROCESSING
Specimen processing instructions:
Centrifuge and aliquot. 
Transport temperature:
Refrigerated.
Specimen stability:
Room temperature: 7 days. Refrigerated: 14 days. Frozen: 30 days.
Rejection criteria:
Grossly hemolyzed or lipemic samples.

TEST DETAILS
Reference interval:
Negative <7 U/mL
Interpretation guide:
Negative <7 U/mL
Equivocal 7-10 U/mL
Positive >10 U/mL
CPT code(s):
86364 x2
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
tTG IgA and IgG Antibodies
Methodology:
Enzyme Immunoassay (EIA)
Synonyms:
TTGAB
Celiac
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. 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..
Doctoral Director(s:)
Hoi-Ying Elsie Yu PhD, DABCC    
Review Date: 07/22/2022

Performing Locations

Geisinger Medical Center

Performing laboratory: Immunology
Technical Lead: Kathy Hurst
Frequency: Monday-Friday, 1st shift
Performed STAT? No
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