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25421 Tissue Transglutaminase IgG Antibody

Tissue Transglutaminase IgG Antibody
Test Code: TTG-IGG
Synonyms/Keywords
​Sprue, Celiac, tTG
Test Components
​Tissue Transglutaminase IgG Antibodies
Useful For
An aid in the diagnosis of gluten sensitive enteropathy (celiac disease), in tTG IgA antibody negative patients with confirmed IgA deficiency.
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 ​0.5 mL ​0.5 mL
Collection Processing Instructions

​Separate serum from cells within 2 hours of collection.

Specimen Stability Information
Specimen Type Temperature Tim​​e
​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
Patients with celiac disease produce anti-tissue transglutaminase antibodies of the IgA isotype. This test is recommended for patients with low serum IgA levels where the production of IgA antibodies may be impaired.
Reference Range Information
Performing Location Reference Rang​​e
​Marshfield ​Negative < 15.0 U/mL
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments​​
​86364 ​ ​ ​ ​
Synonyms/Keywords
​Sprue, Celiac, tTG
Test Components
​Tissue Transglutaminase IgG Antibodies
Ordering Applications
Ordering Application Description

​Cerner
​​Tissue Transglutaminase IgG Antibody
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 ​0.5 mL ​0.5 mL
Collection Processing

​Separate serum from cells within 2 hours of collection.

Specimen Stability Information
Specimen Type Temperature Tim​​e
​Serum ​ ​Refrigerate ​7 days
​Frozen ​> 7 days
Rejection Criteria
​​Gross lipemia
Gross hemolysis​
​Heat inactivated samples
​Gross icterus
Useful For
An aid in the diagnosis of gluten sensitive enteropathy (celiac disease), in tTG IgA antibody negative patients with confirmed IgA deficiency.
Test Components
​Tissue Transglutaminase IgG Antibodies
Reference Range Information
Performing Location Reference Rang​​e
​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.