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Labcorp Oklahoma, Inc.
Test Directory


Index:

Tissue Transglutaminase IgG (IgG anti-tTG)

Order Name TISTRN IGG
Test Number: 5536025
Revision Date 12/12/2022
Test Name Methodology LOINC Code
Tissue Transglutaminase IgG (IgG anti-tTG)
Enzyme immunoassay (EIA) 56537-4 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Serum Clot Activator SST Refrigerated
Instructions Notes: 0.5 mL (Note: This volume Does NOT allow for repeat testing).
Specimen Type: Red-top tube or gel-barrier tube
Specimen Storage: Room temperature
Specimen Collection: Specimen should be free of bacterial contamination, hemolysis, and lipemia. To avoid delays in turnaround time when requesting multiple tests on frozen samples, PLEASE SUBMIT SEPARATE FROZEN SPECIMENS FOR EACH TEST REQUESTED.
Specimen Stability: Ambient: 14 days, Refrigerated : 14 days, Frozen: 14 days
GENERAL INFORMATION
Expected TAT 2-3 Days  
Clinical Use Tissue Transglutaminase Antibody, IgG is useful in diagnosing gluten-sensitive enteropathies, such as celiac sprue, and an associated skin condition, dermatitis herpetiformis in patients who are IgA-deficient. The test also provides support for gluten-sensitive enteropathies beyond IgA the test. 
Performing Labcorp Test Code 164988 
Notes Labcorp Test Code: 164988
CPT Code(s) 86364
Lab Section Reference Lab