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Test ID FG4FI IgG4 Food Panel I

Method Name

Enzyme Immunoassay (FEIA)

Reporting Name

IgG4 Food Panel I

Specimen Type

Serum

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) Performed

Monday, Wednesday, Friday

Report Available

2 - 3 days

Performing Laboratory

Viracor-IBT Laboratories

Test Classification

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

CPT Code Information

86001 x 10

NY State Approved

Yes