Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  


Sunquest Test Code:
GLIAB      Geisinger Epic Procedure Code: 83520.07         Geisinger Epic ID: 17733

Specimen type:
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 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. 2-8°C: 48 hours. Frozen: 6 months.
Rejection criteria:
Specimen stability exceeded; specimen grossly hemolyzed.

Reference interval:
Gliadin (DGP) IgG < 20 Units
Gliadin (DGP) IgA < 20 Units
CPT code(s):
83520 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:
Deamidated Gliadin IgG, Deamidated Gliadin IgA antibody.
Enzyme-Linked Immunosorbent Assay (ELISA)
Gliadin Antibody Panel
Gluten Antibody Panel
Deamidated Gliadin Peptide Antibody Panel
Gliadin DGP Antibody Panel
Clinical significance:
Both Gliadin IgA and IgG antibodies are detected in patients with gluten-sensitive enteropathies such as celiac disease and dermatitis herpetiformis. Screening strategy for at-risk populations should include testing for both Gliadin IgA and IgG antibodies, as a significant portion of celiac patients are IgA deficient. Gliadin IgA antibodies are of interest for following disease activity over time and for monitoring for adherence to a gluten-free diet.
Doctoral Director(s:)
Stacy Kenyon, PhD, DABCC
Hoi-Ying Elsie Yu, PhD, DABCC    
Review Date: 10/31/2018

Performing Locations

Geisinger Medical Center

Performing laboratory: Immunology
Technical Lead: Kathy Hurst
Frequency: Monday - Friday, 1st shift
Performed stat? No
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