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Test Code FFPG4 Food Panel IgG4 (532)


Specimen Required


Draw blood in a plain red-top tube(s), serum gel tube(s) is acceptable. Spin down and send 1 mL of serum refrigerated in a plastic vial.


Method Name

ImmunoCAP

Reporting Name

Food Panel IgG4 (532)

Specimen Type

Serum

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 28 days
  Frozen  365 days
  Ambient  7 days

Reject Due To

Hemolysis Mild OK; Gross Reject
Lipemia Mild OK; Gross Reject
Icterus Mild OK; Gross Reject
Other NA

Reference Values

Reference ranges have not been established for food-specific IgG4 tests. The clinical utility of food-specific IgG4 tests has not been clearly established. These tests can be used in special clinical situations to select foods for evaluation by diet elimination and challenge in patients who have food-related complaints, and to evaluate food allergic patients prior to food challenges. The presence of food-specific IgG4 has been studied in response to various oral food immunotherapy treatments but cutoffs have not been established.

Day(s) Performed

Monday through Friday

Report Available

3 to 7 days

Performing Laboratory

Eurofins Viracor

Test Classification

This test was developed and its performance characteristics determined by Viracor Eurofins. It has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

86001 x 8