Test Information

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Test Code: 2105

Cpt Code:

83516 (x1)

Clinical Utility

This ELISA measures IgG antibodies specific for IgE. These autoantibodies have been implicated as a causative agent in autoimmune chronic urticaria. In addition, these autoantibodies have also been implicated as significant in atopic dermatitis and hyper IgE syndrome.


IgG antibodies specific for IgE are detected with a solid phase indirect non-competitive ELISA. Human IgE is coated onto polystyrene micro-wells (solid-phase antigen). IgG antibodies in serum that bind to the IgE are detected with a labeled anti-human IgG antibody. This test has not been cleared or approved for diagnostic use by the U.S. Food and Drug Administration.

Assay Range

Qualitative test resulted as Normal or Elevated. A result of normal indicates that the level of IgG anti-IgE antibodies is similar to that seen in a population of healthy individuals. A result of elevated indicates an increased level of IgG anti-IgE antibodies compared to healthy individuals.

Turnaround Time

Setup on Wednesday and reports on Thursday. TAT: 5-7 business days from receipt of specimen.

Specimen Information

serum - NY approved. A minimum volume of 1 mL of serum is required. Blood should be collected and allowed to clot prior to centrifugation. The specimen can be shipped via overnight courier at ambient temperature. If the specimen is to be held for more than two weeks, it should be stored frozen until shipped to the lab.


Specimens are approved for testing in New York only when indicated in the Specimen Information field above.

The CPT codes provided are based on Viracor-IBT's interpretation of the American Medical Association's Current Procedural Terminology (CPT) codes and are provided for general informational purposes only. CPT coding is the sole responsibility of the billing party. Questions regarding coding should be addressed to your local Medicare carrier. Viracor-IBT assumes no responsibility for billing errors due to reliance on the CPT codes illustrated in this material.


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