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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
Specimen Stability Information
Specimen Type Temperature Tim​​e
​Serum ​ ​Refrigerate ​7 days
​Frozen ​> 7 days
Rejection Criteria
​​Gross lipemia
Gross hemolysis​
​Heat inactivated samples
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation​​
Marshfield​ ​Monday through Friday ​1 day ​Multiplex Immunoassay
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
Interpretation

​Technical Contact: Dr. J. Flanagan

Interpretive Contact: Dr. J. Flanagan & Dr. J. Resnick

Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments​​
​83516 ​ ​ ​ ​
Synonyms/Keywords
​Sprue, Celiac, tTG
Test Components
​Tissue Transglutaminase IgG Antibodies
Ordering Applications
Ordering Application Description
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
Specimen Stability Information
Specimen Type Temperature Tim​​e
​Serum ​ ​Refrigerate ​7 days
​Frozen ​> 7 days
Rejection Criteria
​​Gross lipemia
Gross hemolysis​
​Heat inactivated samples
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
Interpretation

​Technical Contact: Dr. J. Flanagan

Interpretive Contact: Dr. J. Flanagan & Dr. J. Resnick

For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation​​
Marshfield​ ​Monday through Friday ​1 day ​Multiplex Immunoassay

​Marshfield Labs
1000 North Oak Avenue
Marshfield, WI 54449-5795

Laboratory Reference Services

  • Marshfield Labs Customer Service
    • Toll-free: 800-222-5835
    • Direct Dial: 715-221-6700
    • Internal: ext. 16700
    • Fax: 715-221-6215
    • Email: mlcussev@marshfieldclinic.org
    • Web Portal Helpline (technical support):866-522-2611

Billing Questions

  • Marshfield Center Patient Assistance Center (PAC)
    • Fee estimates, assistance with available government programs (e.g Badger Care): 800-782-8581 ext. 94475
    • Insurance eligibility, insurance referrals, managed care requirements that include Preadmission Review (PAR): 800-782-8581 ext. 75559
  • Patient Financial Services (PFS)
    • Marshfield Center: Billing statements(questions/concerns): 800-782-8581 ext. 90700
    • Marshfield Labs Billing Department: Billing statements, insurance eligibility/contracts, fee estimates (Non-Sendouts), credit card payments: 800-782-8581 ext. 90616
    • St. Joseph's Hospital of Marshfield (a Ministry affiliate): Internal ext. 77164
For sites other than Marshfield Center, please contact your local PAC (e.g. Diagnostic &Treatment Center, Flambeau Hospital, Lakeview Medical Center)

Toxicology Services

  • Toll-free: 800-331-3734
  • Direct Dial: 715-389-3734
  • Fax: 715-389-3737
  • Billing questions: 715-389-0616
  • Customer Service Email: forensic.toxicology@marshfieldclinic.org
  • Web Portal Helpline (technical support): 866-522-2611

For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments​​
​83516 ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual. Fri Mar 14 2025 11:22:54 GMT+0000 (Coordinated Universal Time)