Yale New Haven Hospital

Department of Laboratory Medicine
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Tissue transglutaminase, IgA

Lab Section: 

Immunology

 

Lab Location: 

Main Lab

Test ID: 

LAB723

 

Synonyms: 

Anti-Tissue Transglutaminase IgA

Methodology: 

Semi-Quantitative Chemiluminescent Immunoassay (CIA)

Schedule: 

Monday, Tuesday, Thursday

Reported: 

4 days

Specimen Requirements: 

Collection: 5.0 mL Blood in a Gold Top Tube.
Pediatric volume: 1 mL.
Unacceptable conditions: Gross hemolysis
Stability: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 3 months

 

Notes: 

Clinical Indications: The finding of tissue transglutaminase (tTG) antibodies may indicate a diagnosis of celiac disease. For individuals with moderately to strongly positive results, a diagnosis of celiac disease. Jejunal biopsy to confirm the diagnosis is often recommended.

Reference Interval: 

<20.0 CU = Negative
20.0-30.0 CU = Weak Positive
>30.0 CU = Positive

CPT Code(s): 

83516

Last Changed: 

12/23/2016 14:46:04

Last Reviewed: 

8/16/2017 2:40:43 PM