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Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog
TISSUE TRANSGLUTAMINASE ANTIBODY (IGG,IGA) |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB3165 Geisinger Epic ID: 45699 | |
SPECIMEN COLLECTION |
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Specimen type: |
Serum | |
Preferred collection container: |
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Alternate Collection Container: |
6 mL red-top (plain, non-serum separator) tube
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Specimen required: |
1 mL serum; minimum 0.5 mL | |
| SPECIMEN PROCESSING |
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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 |
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Reference interval: |
Negative <7 U/mL | |
Interpretation guide: |
Negative <7 U/mL Equivocal 7-10 U/mL Positive >10 U/mL |
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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) |
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Synonyms: |
TTGAG Celiac
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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: | 12/13/2022 | |