Celiac Antibodies tTG IgA/IgG With DGP IgA/IgG Positive/Negative Combination Screen

CPT: 83516
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  • tTG/DGP Screen

Test Includes

IgA and IgG antibodies to deamidated gliadin-derived peptides (DGP) and human tissue transglutaminase (h-tTG) in human serum

Expected Turnaround Time

2 - 5 days

Related Documents

Specimen Requirements




0.5 mL

Minimum Volume

0.25 mL (Note: This volume does not allow for repeat testing.)


Red-top tube or gel-barrier tube


Serum separated from clot

Storage Instructions

Room temperature

Stability Requirements



Room temperature

14 days


14 days


14 days

Causes for Rejection

Microbially-contaminated, heat-treated, or specimens containing visible particulate; grossly hemolyzed or lipemic serum specimens

Test Details


For detection of IgA and IgG antibodies to deamidated gliadin-derived peptides (DGP) and human tissue transglutaminase (h-tTG) in human serum. The presence of these antibodies can be used in conjunction with clinical findings and other laboratory tests to aid in the diagnosis of IgA-sufficient and IgA-deficient celiac disease.


Enzyme-linked immunosorbent assay (ELISA)


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Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
164040 tTG/DGP Screen 63420-4 164041 tTG/DGP Screen 63420-4

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