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Tissue Transglutaminase, IgA

Message
Performed in the Chemistry Laboratory x5820


Test Code
TTGA


CPT Codes
83516

Preferred Specimen
Serum


Minimum Volume
1 mL


Transport Container
Gold Top (SST)


Transport Temperature
Room temperature


Specimen Stability
Refrigerated: 48 hours


Methodology
ELISA

Setup Schedule
This assay is performed 1-2 times a week.


Reference Range
<20 units: Negative
20-30 units: Weak Positive
>30 units: Moderate to Strong Positive


Clinical Significance
This test is used in the diagnosis of certain gluten sensitive enteropathies such as celiac disease and dermatitis herpetiformis.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.