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HelpTest Code DGPIGAG Gliadin (Deamidated) IgA Reflex to IgG
Additional Codes
ALAB: DGPIGAG
Powerchart: Gliadin Ab IgA w Reflex to IgG
MA Cerner: Gliadin IgA Reflex to IgG
Test Method
Multiplex Flow Immunoassay; BioRad BioPlex
Specimen Requirement
Serum is preferred, EDTA or heparinized plasma are also acceptable. Gel tubes are acceptable.
Additional Specimen Collection Information
Collect blood in a serum or plasma gel tube (EDTA or heparin).
- Minimum volume: 500 mcL
- Hemolysis: > 2+ not acceptable
- Lipemia: > 3+ must be ultracentrifuged
- Icterus: no significant interference noted
- Storage: specimen is stable for up to 7 days refrigerated;
freeze at -20oC for long term storage.
Thoroughly mix thawed specimens; it is also recommended to centrifuge thawed specimens to remove gross particulate matter. Avoid multiple freeze-thaw cycles (up to 3 cycles are acceptable).
Performance
Testing is performed Monday through Friday.
Routine: Typically completed within 24 hours after the specimen
arrives at the testing site.
STAT: Typically completed within 4 hours after the specimen arrives at the testing site.
Reference Value
Gliadin (Deamidated) IgA:
- < 15.0 U/mL (Negative)
The Gliadin (Deamidated) IgA Antibody tests includes an assessment for IgA deficiency at no additional charge with reflex to Gliadin (Deamidated) IgG. -
≥ 15.0 U/mL (Positive)
CPT Code Information
83516
Useful For
Gliadin (Deamidated) IgA:
- Evaluating patients suspected of having celiac disease; this includes patients with symptoms compatible with celiac disease, patients with atypical symptoms, and individuals at increased risk of celiac disease
- Evaluating the response to treatment with a gluten-free diet
LOINC Code Information
47393-4 Gliadin peptide IgA Ab [Presence] in Serum by Immunoassay