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Test ID FG4FP IgG4 Food Panel VIII

Method Name


Reporting Name

IgG4 Food Panel VIII

Specimen Type


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.

Specimen Minimum Volume

1 mL

Specimen Stability Information

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

Reference Values

Corn IgG4                     <0.15 mcg/mL

Egg White IgG4             <0.15 mcg/mL

Milk Cow IgG4               <0.15 mcg/mL

Peanut IgG4                  <0.15 mcg/mL

Soybean IgG4               <0.15 mcg/mL

Wheat IgG4                   <0.15 mcg/mL


The reference range listed on the report is the lower limit of quantitation for the assay. The clinical utility of food-specific IgG4 tests has not been 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. It should be recognized that the presence of food-specific IgG4 alone cannot be taken as evidence of food allergy and only indicates immunologic sensitization by the food allergen in question. This test should only be ordered by physicians who recognize the limitations of the test.


Day(s) and Time(s) Performed

Monday through Friday

Performing Laboratory

Viracor Eurofins

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 6

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FG4FP IgG4 Food Panel VIII In Process


Result ID Test Result Name Result LOINC Value
Z3148 Corn IgG4 56231-4
Z3149 Egg White IgG4 56253-8
Z3150 Milk Cow IgG4 56234-8
Z3151 Peanut IgG4 56351-0
Z3152 Soybean IgG4 56390-8
Z3153 Wheat IgG4 56417-9