ARUP's Laboratory Test Directory

Celiac Disease Dual Antigen Screen : 0051689

Mnemonic: TTG DGP

Methodology: Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed: Mon, Fri
Reported: 1-5 days
Specimen Required: Collect: Serum separator tube.

Specimen Preparation: Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.3 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Plasma or other body fluids. Contaminated, heat-inactivated, hemolyzed, icteric, or lipemic specimens.

Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year
Reference Interval:
19 Units or less: Negative - No significant level of detectable IgA or IgG antibodies against human tissue transglutaminase or gliadin peptide.

20 Units or greater: Positive - Presence of IgA and/or IgG antibodies against human tissue transglutaminase and/or gliadin peptide; suggests possibility of certain gluten sensitive enteropathies such as celiac disease and dermatitis herpetiformis.
Note: This test is a combined antibody screen for tissue transglutaminase and deamidated gliadin-derived peptide antibodies, IgA and IgG.
CPT Code(s): 83516
 
 

 

 

 
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