| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Tissue Transglutaminase Antibodies (IgG, IgA) (TTABGA)
Test CodeLAB2412
Quest Code
11073
Alias/See Also
TTABGA
CPT Codes
86364 (x2)
Preferred Specimen
1 mL serum in gold top tube
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plain red top tube
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic
Methodology
Immunoassay (IA)
Setup Schedule
Noon cutoff in dept; 4pm setup; Report by 11pm Monday thru friday
Report Available
3 days
Reference Range
Tissue Transglutaminase Antibody, IgG
Tissue Transglutaminase Antibody, IgA
| <15.0 U/mL | Antibody not detected |
| ≥15.0 U/mL | Antibody detected |
Tissue Transglutaminase Antibody, IgA
| <15.0 U/mL | Antibody not detected |
| ≥15.0 U/mL | Antibody detected |
Clinical Significance
Tissue Transglutaminase Antibody, IgA, is useful in diagnosing gluten-sensitive enteropathies, such as Celiac Sprue Disease, and an associated skin condition, dermatitis herpetiformis. The IgG test is useful in patients who are IgA-deficient. The IgG test also provides support for gluten-sensitive enteropathies beyond the IgA test.
Performing Laboratory
| Quest Diagnostics - South Region |
