Celiac Ab TTG TIGA w/rflx

Alphabetical Test listing

Celiac Ab TTG TIGA w/rflx-12442

Test name:

Test number:

12442

Excellian order number:

LAB12442

Abbreviation:

CELC LC

Alternate names:

Celiac cascade
Celiac disease panel
Celiac
TTG
DGP
Celiac Antibodies tTG IgA and Total IgA With Reflex to tTG IgG and DGP IgG

Tests included:

Total IgA and tTg IgA
- Deamidated Gliadin IgG and tTG IgG performed at an additional charge, if indicated

Useful for:

This test is used to aid in the diagnosis of gluten-sensitive enteropathies

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

3.0 mL

Minimum volume:

1.0 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

Performing lab:

LabCorp Burlington (164047); R-LC

Days set up:

Mo, We, Fr

TAT:

2 - 4 days

Method:

Enzyme immunoassay (EIA) and

Fluoroenzyme Immunoassay EliA

Reference ranges:

IgA total
Adult: 87 - 352 mg/dL

TTg IgA
Negative: 0 - 3 U/mL
Weak positive: 4 - 10 U/mL
Strong positive: >10 U/mL

TTg IgG
Negative: 0 - 5 U/mL
Weak positive: 6 - 9 U/mL
Strong positive: >9 U/mL

Deamidated Gliadin Abs IgG
Negative: 0 - 19 U/mL
Weak positive: 20 – 30 U/mL
Strong positive: >30 U/mL

Clinical information:

CPT codes:

82784 - IgA

Additional CPT codes (if appropriate):
86258 - Gliadin Ab IgA
86258 - Gliadin Ab IgG
86364 - Tissue Transglutaminase IgA
86364 - Tissue Transglutaminase IgG

Hospital EAP/charge code:

17002840

17027680 - Gliadin Ab IgA
17029456 - Gliadin Ab IgG
17027678 - Tissue transglutaminase IgA
17027679 - Tissue transglutaminase IgG

Clinic EAP/charge code:

308278403

308625801 - Gliadin Ab IgA
308625800 - Gliadin Ab IgG
308636400 - Tissue transglutaminase IgA
308636401 - Tissue transglutaminase IgG

Date created:

04/09/2014

Revised date:

10/12/2026

Review date:

10/12/2026