Ordering Recommendation

Use to assess and monitor dermatitis herpetiformis. Testing should be correlated with concurrent Direct Immunofluorescence, Tissue Biopsy (Cutaneous, Mucosal, Epithelial) (0092572). Because most patients with dermatitis herpetiformis have associated celiac disease, testing should be performed in conjunction with Celiac Disease Reflexive Cascade, Serum (3016817).

For initial diagnosis and assessment of disease progression/changes and to distinguish from other immunobullous diseases with epithelial antibodies, order concurrently with serum Immunobullous Disease Antibody Panel (3001409).

For more information about components, methodology, and specimen type, see the ARUP Immunobullous Disease Testing Comparison tool.

New York DOH Approval Status

Testing is not New York state approved. Specimens from New York clients will be sent out to a New York state-approved laboratory.

Specimen Required

Patient Preparation

Plain red or serum separator tube (SST).

Specimen Preparation

Transfer 2 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature


Unacceptable Conditions

Hemolyzed or lipemic specimens. Plasma.


Ambient: 1 week; Refrigerated: 2 weeks; Frozen: Indefinitely


Semi-Quantitative Enzyme-Linked Immunosorbent Assay




14-28 days

Reference Interval

By report

Interpretive Data

Refer to report

Compliance Category

Performed by non-ARUP Laboratory


For specimens less than 0.5 mL, call the Immunodermatology Laboratory at (866) 266-5699.

Hotline History


CPT Codes



Component Test Code* Component Chart Name LOINC
2010903 Epidermal Transglutaminase Ab IgA, ELISA
2010904 EER Epidermal Transglutaminase Ab, IgA 11502-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.


  • Brocq-Duhring disease
  • celiac disease
  • celiac sprue
  • dermatitis herpetiformis
  • dermatitis multiformis
  • DH
  • Duhring disease
  • Duhring-Brocq disease
  • EMA
  • endomysial antibody
  • Epidermal Transglutaminase (etG/tTG3) Antibody, IgA by ELISA
  • gluten-sensitive enteropathy
  • HLA-DQ2
  • HLA-DQ8
Epidermal Transglutaminase (eTG/TG3) Antibody, IgA by ELISA