Test Directory

Test Code
TTIGG
Test Name
tTg IgG Autoantibody
CPT Codes
86364
Expected Turnaround Time
4 - 7 days
Clinical Utility

Useful in the detection of Tissue Transgultaminase (tTG) IgG antibodies in IgA deficient patients

Specimen and Container Info

Preferred Specimen Type: Serum

Desired Specimen Volume: 2 mL

Preferred Collection Container: Gold Top, Serum Separator

Processing and Submission Instructions
  1. Allow specimen to sit upright for 30 minutes.
  2. Centrifuge 15 minutes.
Transport Instructions

Transport refrigerated. 

Stability Requirements

Refrigerated

7 days

Frozen

<20°C for long-term storage.

Freeze/Thaw Cycles

Avoid multiple freeze/thaw cycles. 

Methodology
Semi-Quantitative Multiplex Bead Assay
Reference Intervals

Result

Interpretation

< 6 U/mL

Negative

6 - 9 U/mL

Weak Positive

> 9 U/mL

Positive

Performing Location
Roble Road Core Laboratory
Testing Schedule
Routine, Monday - Friday no holidays