Celiac Antibodies tTG IgA, DGP IgA, Total IgA With Reflex to tTG IgG and DGP IgG
Also known as: Gliadin, IgA, Tissue Transglutaminase (tTG)
Use
Aid in the diagnosis of gluten-sensitive enteropathies
Special Instructions
This test is reflexive, including additional testing for tTG IgG and DGP IgG if certain conditions are met. The test menu and order codes should be followed precisely to ensure accurate diagnosis.
Limitations
The sensitivity and specificity of serologic markers can vary based on the stage of disease and the patient's protein intake. False negatives may occur in individuals with IgA deficiency. Confirmatory tests or follow-up tests may be required if initial results do not align with clinical symptoms.
Methodology
Immunoassay (Enzyme immunoassay (EIA))
Biomarkers
LOINC Codes
- 94493-4
- 31017-7
- 58709-7
- 2458-8
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
3 mL
Minimum Volume
1 mL
Container
Red-top tube or gel-barrier tube
Storage Instructions
Room temperature
Causes for Rejection
Hemolysis; lipemia; gross bacterial contamination
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |