Tissue transglutaminase IgA and IgG

Alphabetical Test listing

Tissue transglutaminase IgA and IgG-4888A

Test name:

Test number:

4888A

Excellian order number:

LAB4888A

Abbreviation:

TTGA

Alternate names:

TTA
TTG

Tests included:

Tissue transglutaminase IgA
Tissue transglutaminase IgG

Useful for:

Diagnosis and monitoring of Celiac Disease

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

1.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Specimens should be collected by venipuncture
Immediately following collection, mix sample thoroughly by gentle inversion, 5 times

Processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin
1. Samples may sit up to 24 hours at room temperature prior to centrifugation

Transport container:

Gold serum separator (SST) tube

Alternate collection container:

Red serum vial/tube, 5 mL

Alternate processing instructions:

Allow sample to clot
Spin
1. Samples may sit up to 24 hours at room temperature prior to centrifugation
Transfer serum to a False bottom plasma/serum transport vial/tube (AHL), labelled as serum

Alternate transport container:

False bottom plasma/serum transport vial/tube (AHL)

Transport and stability:

Refrigerated - 7 days

Specimen retention time:

5 days

Reason for rejection:

Gross hemolysis
Gross lipemia
Improper labeling
Improper storage
Quantity not sufficient (QNS)

Performing lab:

AHL - Immunology: J

Days set up:

TAT:

7 days

Method:

Enzyme-linked Immunosorbent Assay (ELISA)

Reference ranges:

Tissue transglutaminase IgA:

Negative	<4.0 U/mL
Weak positive	4 - 10 U/mL
Positive	>10 U/mL

Tissue transglutaminase IgG:

Negative	<6.0 U/mL
Weak positive	6 - 9 U/mL
Positive	>9 U/mL

CPT codes:

86364 x 2

Hospital EAP/charge code:

17027678
17027679

Clinic EAP/charge code:

308636400
308646301

Date created:

01/03/2022

Revised date:

04/27/2022

Review date:

04/27/2022