Test Name
IgA Epidermal Transglutaminase, (eTg)/Transglutaminase 3 (TG3) Antibody Level By ELISA
Ordering Recommendation
For assessing disease activity in dermatitis herpetiformis
Methodology
Enzyme-linked immunosorbent assay (ELISA)
Performed
Typically performed weekly, varies dependent upon specimen number requests
Reported
7-14 days
New York State Department of Health (NYSDOH) Approval Status
This test is not New York State DOH approved
Information Required to Submit with Order
Completed Immunodermatology Laboratory requisition form and copies of both sides of insurance cards or completed billing information
CPT Code(s)
83516
SPECIMEN REQUIREMENTS
Collect Blood
Plain red top tube or serum separator tube
Specimen Preparation
2 mL serum separated from blood into serum vial provided in kit (Minimum needed: 0.5 mL)
Storage/Transport Temperature
Store refrigerated/transport ambient temperature
Conditions with Disclaimer for Potentially Anomalous Results
Hemolyzed or lipemic serum specimens, whole blood
Stability
Ambient: 7 days
Refrigerated: 14 days
Frozen: Indefinitely