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Specimen Collection Manual and Test Catalog

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GLIADIN (DEAMIDATED) IGA ANTIBODY

Geisinger Epic Procedure Code:  LAB2356    Geisinger Epic ID:  26878

SPECIMEN COLLECTION
Specimen type: 

Serum


Preferred collection container: 
Alternate collection container: 
6 mL red-top (plain, non-serum separator) tube
Specimen required: 

0.5 mL serum; minimum 0.2 mL



SPECIMEN PROCESSING
Processing instructions: 

Allow to clot. Centrifuge and submit 0.5 mL serum.


Transport temperature: 

Refrigerated (preferred). Room temperature (stable 8 hours) and frozen specimens also acceptable.


Specimen stability: 

Room temperature: 8 hours. Refrigerated (2-8°C): 48 hours. Frozen: 6 months.


Rejection criteria: 

Specimen stability exceeded; specimen grossly hemolyzed.



TEST DETAILS
Reference interval: 

Negative <7 U/mL


Interpretation guide: 

Negative <7 U/mL 
Equivocal 7-10 U/mL 
Positive >10 U/mL


CPT code(s):  86258
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: 

Deamidated gliadin IgA antibody.


Methodology: 
Enzyme Immunoassay (EIA)
Synonyms: 

Gliadin IgA AB, DGPA, Celiac, Gliadin IgA Antibody


Clinical significance: 

Gliadin IgA antibodies are detected in patients with gluten-sensitive enteropathies such as celiac disease and dermatitis herpetiformis.


Doctoral Director(s): 
Benjamin Andress, PhD, DABCC
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Review Date:  12/04/2024

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