Tissue Transglutaminase (tTG) Antibodies (IgG, IgA)

Test Code

11073

CPT Code(s)

86364 (x2)

Test Code

11073

CPT Code(s)

86364 (x2)

Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.

In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

Tissue Transglutaminase (tTG) Antibodies (IgG, IgA) - 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.

Test Resources

None found for this test
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Test Details

Methodology

Immunoassay (IA)

Reference Range(s)

Tissue Transglutaminase Antibody, IgG

<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

Alternative Name(s)

Celiac Disease,Transglutaminase IgG IgA

LOINC® Codes, Performing Laboratory

Service Area must be determined

Methodology

Immunoassay (IA)

Reference Range(s)

Tissue Transglutaminase Antibody, IgG

<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

Alternative Name(s)

Celiac Disease,Transglutaminase IgG IgA

LOINC® Codes, Performing Laboratory

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.5 mL

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days

Reject Criteria

Gross hemolysis • Grossly lipemic

Setup Schedule

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.5 mL

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days

Reject Criteria

Gross hemolysis • Grossly lipemic

Setup Schedule

Service Area must be determined

Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.

In-home collection may be available in your area for purchase through Quest Mobile.

Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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