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Test Code TTG IgA Tissue Transglutaminase Antibody IgA

Clinical System Name

Tissue Transglutaminase Antibody IgA

Synonyms

Celiac Screening

TTG

TTG IgA

TRANSGLUT

Description

First-line test recommended for diagnosing Celiac Disease.

 

 

 

Sample Requirements

Specimen: Whole blood

Container(s): Gold SST Microtainer, Red

Preferred Vol: 1 mL

Minimum Vol: 0.5 mL

 

Note:

 

Processing Instructions

Reject due to: Visible hemolysis

Spin: Y

Aliquot: Y

Temp: 2-8 C

Storage location: Transfer serum to plastic aliquot container affixed with larger Cerner label. Refrigerate in CPA FrigF rack.

 

Off-site collection: Spin blood, transfer serum to plastic aliquot container. Refrigerate specimen.

Stability

Specimen Type Temperature Time
serum  Room temp  
  Refrigerated 7 d
  Frozen 8 m

 

Availability

STAT Performed TAT
N M-F 1 - 3 d

 

Performing Laboratory

Seattle Children's Laboratory    

 

Department

Department:  Chemistry

Location: Chem East

Phone Number: (206) 987-3694

 

 

 

Reference Range

 

  Units/mL
Negative < 15
Positive > 15

 

Methodology

Method: Immunoassay on Bioplex 2200

Analytical Volume: 100 mcL serum

Limitations:  Visible hemolysis causes a false decrease in measured tTG.

CPT Codes

83516