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Tissue Transglutaminase (tTG) IgG

Test Code:

PDL0090

Division:

Autoimmune

CPT Code:

86364

Sample Type:

Serum

Sample Requirements:

SST tube.

Purpose:

Used when IgA deficiency is suspected in celiac testing.

High Levels:

Suggests celiac disease (especially with IgA deficiency).

Low Levels:

Normal result.

Reference Range:

<4 U/mL

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