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Tissue Transglutaminase IgG (IgG anti-tTG)

Order Name TISTRN IGG
Test Number: 5536025
Revision Date 01/01/2022
Test Name Methodology LOINC Code
Tissue Transglutaminase IgG (IgG anti-tTG)
Semi-Quantitative Enzyme-Linked Immunosorbent Assay 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 Collect Serum in SST or Red No-Gel Clot tube.
Remove serum from cells ASAP or within 2 hours of collection.
Unacceptable Conditions: Plasma. Hemolyzed or severely lipemic specimens.
Stability After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year.
GENERAL INFORMATION
Testing Schedule Sun-Sat  
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. 
CPT Code(s) 86364
Lab Section Reference Lab