Print Preview

Tissue transglutaminase IgA-2993

Test info

Test name:

Tissue transglutaminase IgA

Test number:

2993

Excellian order number:

83516.1

Abbreviation:

TTA

Alternate names:

Celiac disease
TTG IgA Aby
tTG, IgA
T-Transglutaminase

Useful for:

Detection of antibodies to aid in the diagnosis of gluten-sensitive enteropathy (GSE), such as celiac disease and dermatitis herpetiformis

Specimen

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

1.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection

Transport container:

Gold serum separator (SST) tube

Alternate collection container:

Red serum vial/tube, 5 mL

Alternate processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection
Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum

Alternate transport container:

Transfer vial/tube with cap - 12mL (LabCorp)

Transport and stability:

Ambient (preferred) - 14 days

Refrigerated - 14 days

Frozen - 14 days

Freeze/thaw cycles - stable x3

Reason for rejection:

Hemolysis
Lipemia
Gross bacterial contamination

Performance

Performing lab:

LabCorp Burlington (164640); R-LC

Days set up:

Mo, We, Fr

TAT:

2 - 4 days

Method:

Fluoroenzyme Immunoassay EliA

Clinical and Interpretive info

Reference ranges:

0.0 - 10.0 U/mL

Negative: <7.0

Equivocal: 7.0 - 10.0

Positive: >10

Billing

CPT codes:

86364

Hospital EAP/charge code:

17027678

Clinic EAP/charge code:

308636400

Tracking

Date created:

11/07/2007

Revised date:

10/12/2026

Review date:

10/12/2026