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22934 Tissue Transglutaminase IgA Antibody

Tissue Transglutaminase IgA Antibody
Test Code: TTG-IGA
Synonyms/Keywords
Sprue, Celiac, tTG IgA
Test Components
​Tissue Transglutaminase IgA Antibodies
Useful For
Tissue Transglutaminase antibodies are useful in the diagnosis of gluten sensitive enteropathy (celiac disease). At present, tTG IgA is the most useful screening test for celiac disease. Levels of antibody decline after the patient maintains a gluten free diet.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Serum​ Red Top Tube (RTT) ​Serum Separator Tube (SST) 1.0 mL​ 1.0 mL​ 0.5 mL​
Collection Processing Instructions

​Separate serum from cells within 2 hours of collection.

Specimen Stability Information
Specimen Type Temperature Time
Serum​ Refrigerate​ 7 days​
Frozen​ > 7 days​
Rejection Criteria
Gross lipemia
Gross hemolysis
Heat inactivated samples​
​Gross icterus
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 1 day​ Multiplex Flow Immunoassay/ BioRad Bioplex 2200
Test Information
Tissue Transglutaminase antibodies are useful in the diagnosis of gluten sensitive enteropathy (celiac disease). At present, tTG IgA is the most useful screening test for celiac disease. Levels of antibody decline after the patient maintains a gluten free diet.
Reference Range Information
Performing Location Reference Range
Marshfield​

Negative <15.0 U/mL

Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
86364​ ​ ​ ​ ​
Synonyms/Keywords
Sprue, Celiac, tTG IgA
Test Components
​Tissue Transglutaminase IgA Antibodies
Ordering Applications
Ordering Application Description
​Cerner ​Tissue Transglutaminase Antibody IgA
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Serum​ Red Top Tube (RTT) ​Serum Separator Tube (SST) 1.0 mL​ 1.0 mL​ 0.5 mL​
Collection Processing

​Separate serum from cells within 2 hours of collection.

Specimen Stability Information
Specimen Type Temperature Time
Serum​ Refrigerate​ 7 days​
Frozen​ > 7 days​
Rejection Criteria
Gross lipemia
Gross hemolysis
Heat inactivated samples​
​Gross icterus
Useful For
Tissue Transglutaminase antibodies are useful in the diagnosis of gluten sensitive enteropathy (celiac disease). At present, tTG IgA is the most useful screening test for celiac disease. Levels of antibody decline after the patient maintains a gluten free diet.
Test Components
​Tissue Transglutaminase IgA Antibodies
Reference Range Information
Performing Location Reference Range
Marshfield​

Negative <15.0 U/mL

For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 1 day​ Multiplex Flow Immunoassay/ BioRad Bioplex 2200
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
86364​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.