Laboratory Test Information Guide

Details for Tissue Transglutaminase-IgA

Test Name: Tissue Transglutaminase-IgA
Alternate Name(s): Transglutamase antibody
tTGAB
Tissue transglutamase antibody
Laboratory: Endocrinology
Specimen Type: 6 mL Red top Vacutainer tube
Collection Information: Draw blood aseptically in a Vacutainer tube.

Spin, aliquot and freeze before sending to Endocrinology.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: Monday - Friday
0800-1600
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
10 days
Stat
 
 
Reference Range: Negative <8.0 AU/mL
Positive >= 8.0 AU/mL
Effective Date: 2009-02-12
Revised Date: 2016-07-20
Critical Value:  
Interpretive Comments: Tissue Transglutaminase is predominantly IgA.
This method measures IgA autoantibodies against tissue Transglutaminase. The result can be negative in IgA deficient patients in the presence of active Celiac Disease. For screening for diagnosis of Celiac Disease the patient should not be on a gluten free diet.
Due to change in methodology as of July 20, 2016 the reference ranges have been adjusted. Repeat testing suggested for patients with values between 7.2 and 8.8 AU/mL
Special Processing:  
Comments: Test is used to diagnose Celiac Disease.
Method of Analysis: Chemiluminescence Diasorin Liaison XL
Critical Information Required:  
Storage & Shipment: 
Store and send frozen
System Codes: 
Cerner
TTGAB
 
Referred To:  

Questions? Comments? Contact Laura Gopaul