Tissue Transglutaminase (tTG) Antibody (IgG)
Test Summary
Tissue Transglutaminase Antibody, IgG, is useful in diagnosing gluten-sensitive enteropathies, such as Celiac Sprue Disease, and an associated skin condition, dermatitis herpetiformis in patients who are IgA-deficient.
Aliases
- TTG IgG
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Instructions
N/A
Patient Preparation
N/A
Storage
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 7 days
- Refrigerated: 14 days
- Frozen: 30 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Gross hemolysis • Grossly lipemic
Order Code
TTGAB
EPIC (Premier) Code
LAB3089
Includes
N/A
CPT Code
- 86364
Billing Code
- 700000
CPT Statement
Methodology
Immunoassay (IA)
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Reference Range
| <15.0 U/mL | Antibody not detected |
| ≥15.0 U/mL | Antibody detected |
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 1 day
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Instructions
N/A
Patient Preparation
N/A
Storage
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 7 days
- Refrigerated: 14 days
- Frozen: 30 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Gross hemolysis • Grossly lipemic
Result Information
Methodology
Immunoassay (IA)
Testing Laboratory
N/A
Reference Range
| <15.0 U/mL | Antibody not detected |
| ≥15.0 U/mL | Antibody detected |
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 1 day