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Test ID FG4FI IgG4 Food Panel I

Method Name

Enzyme Immunoassay (FEIA)

Reporting Name

IgG4 Food Panel I

Specimen Type


Specimen Required

Draw blood in a plain red-top tube(s), serum gel tube(s) is acceptable. Spin down and send 1.5 mL of serum refrigerated in a plastic vial.

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

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

Reference Values

Alpha Lactalbumin IgG4             <0.15

Beef IgG4                                 <0.15

Casein IgG4                              <0.15

Chicken IgG4                            <0.15

Corn IgG4                                 <0.15

Egg Whole IgG4                        <0.15

Milk Cow IgG4                           <0.15

Potato White IgG4                     <0.15

Soybean IgG4                           <0.15

Wheat IgG4                               <0.15


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 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 alone cannot be taken as evidence of food allergy and only indicates immunologic sensitization to the food allergen in question.


Day(s) and Time(s) Performed

Monday, Wednesday, 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 10

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FG4FI IgG4 Food Panel I In Process


Result ID Test Result Name Result LOINC Value
Z3721 Alpha Lactalbumin IgG4 56301-5
Z3722 Beef IgG4 56438-5
Z3723 Casein IgG4 56207-4
Z3724 Chicken IgG4 56218-1
Z3725 Corn IgG4 56231-4
Z3726 Egg Whole IgG4 56255-3
Z3727 Milk Cow IgG4 56234-8
Z3728 Potato White IgG4 56429-4
Z3729 Soybean IgG4 56390-8
Z3730 Wheat IgG4 56417-9