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Order Code LABDESMO Desmoglein 1 (DSG1) and Desmoglein 3 (DSG3), IgG Antibodies, Serum

Additional Codes

Mayo Test Code: DSGAB


Specimen Required


Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Useful For

Preferred screening test for patients suspected to have an autoimmune blistering disorder of the skin or mucous membranes (pemphigus)

 

Aiding in the diagnosis of pemphigus

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Reporting Name

Desmoglein 1 and 3, Serum

Specimen Type

Serum

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 14 days
  Frozen  30 days
  Ambient  14 days

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

Reference Values

DESMOGLEIN 1:

<20 RU/mL (negative)

≥20 RU/mL (positive)

 

DESMOGLEIN 3:

<20 RU/mL (negative)

≥20 RU/mL (positive)

Method Description

This enzyme-linked immunosorbent assay (ELISA) method detects and measures serum levels of antibodies of certain pemphigus diseases. Calibrators and patient sera are added to microwells coated with desmoglein 1 (DSG1) and desmoglein 3 (DSG3) antigens, allowing antibodies to react with the immobilized antigens. After washing to remove any unbound serum proteins, horseradish peroxidase-conjugated IgG is added and incubated. Following another wash step, the peroxidase substrate is added and allowed to incubate for an additional period. Stop solution is then added to each well to cancel the enzyme reaction and to stabilize the color development. The assay can be quantified by measuring the reaction photometrically and plotting the results. The amount of antigen specific bound antibody is proportional to the color intensity.(Package inserts: Anti-Desmoglein 1 ELISA [IgG], Form EA_1495G_A_US_D04. EuroImmun; 07/08/2020; Anti-Desmoglein 3 ELISA [IgG], Form EA_1496G_A_US_D04. EuroImmun; 07/08/2020)

Day(s) Performed

Varies

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

83516 x 2