- YTTG
Tissue Transglutaminase (tTG) IgA
Specimen:
Test Code
YTTG
Specimen Name
Tissue Transglutaminase (tTG) IgA
Collect
SST-Serum
Submit
2 mL (Min: 0.5 mL) Serum, Refrigerated.
Special Handling
Allow specimen to clot completely at room temperature. Separate from cells ASAP. If transport to lab is not the same day as collected, aliquot the serum.
Rejection Criteria
Plasma and other body fluids. Heat-inactivated, hemolyzed, lipemic or contaminated specimens.
Stability
After separation from cells: Ambient: <8 hours; Refrigerated: up to 7 days; For longer storage, freeze at -20º Celsius. Avoid multiple freeze/thaw cycles.
Methodology
Mulitplex Flow Immunoassay
Performed
Monday - Friday
Reported
3-5 days
CPT Codes
- 86364
Components
—
Additional Information
tTG-IgA can be used to monitor adherence to a strict gluten-free diet since IgA levels decline in the absence of gluten. To monitor treatment, the tTG-IgA alone can be retested 6 months after initiation of a gluten-free diet and then monitored annually.
Disclaimer:
It is preferable to locate tests on the website and not rely on printed test information, which may soon be out of date. Updated test information can only be guaranteed by using this website.
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Common Lab Definitions
- Serum
- Plasma
- STT