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Test Code LAB721 Tissue Transglutaminase Antibody, IgG, Serum

Reporting Title

Tissue Transglutaminase Ab, IgG, S

Methodology

Bio-Flash Chemiluminscent Immunoassay

Useful for: Evaluation of patients with IgA deficiency. Evaluating patients suspected of having celiac disease, including patients with compatible clinical symptoms, patients with atypical symptoms, and patients at increased risk (family history, previous diagnosis with associated disorder), positivity for HLA DQ2 and/or DQ8

Screen test for dermatitis herpetiformis, in conjunction with an endomysial antibody test.

Monitoring response to gluten-free diet in patients with dermatitis herpetiformis and celiac disease.

Performing Laboratory

OhioHealth Laboratory Services- RMH Special Testing

Specimen Requirements

Preferred: Serum

Acceptable: Speckle top and plain red top tubes

Draw blood in gold top tube(s). Spin down and send 1 ml of serum refrigerated.

Note: hemolyzed and/or icteric specimens are not acceptable.

Specimen Stability

Specimen Type

Temperature

Time

Serum

Refrigerated (preferred)

     7 days

 

Frozen 

     21 days

Reference Values

Negative: < 20 CU

Weak Positive: 20-30 CU

Positive: >30 CU

Day(s) Performed

Monday - Friday

Specimen Transport Requirements

Refrigerate: OK

Frozen: OK

 

Test Classification and CPT Coding

86364